Die Verkäuferin hat den Reißverschluss sofort repariert, und jetzt passt die Jacke wieder gut auf den Kleiderbügel.

Verkäuferin means saleswoman / female shop assistant. The ending -in is the common way to make many job titles feminine in German:

• der Verkäufer = salesman / male shop assistant
• die Verkäuferin = saleswoman / female shop assistant

So die Verkäuferin tells you the person is female.

This is the present perfect tense, which is very common in spoken German for talking about completed past actions.

It is formed with:

• a conjugated auxiliary verb: hat
• a past participle: repariert

So:

• Die Verkäuferin hat den Reißverschluss repariert = The saleswoman repaired the zipper / has repaired the zipper

In everyday German, this tense is often used where English might use either repaired or has repaired.

Because the subject is die Verkäuferin, which is third person singular (she), and the verb haben changes like this in the present tense:

• ich habe
• du hast
• er/sie/es hat
• wir haben
• ihr habt
• sie/Sie haben

Since die Verkäuferin = she, you need hat.

Because Reißverschluss is the direct object of reparieren. It is the thing being repaired.

The noun Reißverschluss is masculine:

• nominative: der Reißverschluss
• accusative: den Reißverschluss

So after the verb here, you get:

• die Verkäuferin = subject
• hat den Reißverschluss repariert = repaired the zipper

That is why the article changes from der to den.

Reißverschluss means zipper.

It is a compound noun:

• reißen = to tear
• Verschluss = closure / fastener

You do not need to understand the parts every time, but it can help you remember the word. Like all German nouns, it is capitalized: Reißverschluss.

Also note the letter ß, called Eszett or scharfes S.

Sofort means immediately / right away. In a German main clause, the finite verb usually stays in second position, and the past participle goes to the end.

So the structure is:

• Die Verkäuferin = position 1
• hat = position 2
• den Reißverschluss sofort = middle field
• repariert = final participle

German adverbs like sofort often appear in the middle of the sentence, before the final participle.

Because und is joining two main clauses, and each clause has its own finite verb:

1. Die Verkäuferin hat den Reißverschluss sofort repariert
2. jetzt passt die Jacke wieder gut auf den Kleiderbügel

In German, a comma before und is sometimes omitted when the clauses are short and closely connected, but with full clauses like this, the comma is very normal and helpful.

Because German main clauses follow the verb-second rule.

If jetzt comes first, then the finite verb must come next:

• Jetzt passt die Jacke ...

Not:

• Jetzt die Jacke passt ...

So the pattern is:

• jetzt = first element
• passt = second position
• die Jacke = after the verb

This is a very important German word-order rule.

Here passen means something like to fit, to be suitable, or to sit properly.

So die Jacke passt gut auf den Kleiderbügel means the jacket now fits properly on the hanger.

This is not about the jacket fitting a person. It is about the jacket sitting properly where it belongs.

Wieder means again or once more.

Here it shows that after the zipper was repaired, the jacket is back in a normal or usable state:

• jetzt passt die Jacke wieder gut ... = now the jacket fits well again ...

So wieder connects the second clause to the result of the repair.

Gut is an adverb here, meaning well.

German often places adverbs like gut in the middle part of the clause:

• Die Jacke passt gut
• Die Jacke passt wieder gut auf den Kleiderbügel

So gut describes how well the jacket fits on the hanger.

This is a very common learner question.

Auf is a two-way preposition, which can take:

• accusative for direction / change of position
• dative for location / position

Here we have:

• auf den Kleiderbügel

because the idea is that the jacket now fits properly onto the hanger, as the result of being put there. That gives it a directional or placement sense, so the accusative is natural.

Compare:

• Die Jacke hängt auf dem Kleiderbügel. = The jacket is hanging on the hanger.
  
  • location, so dative
• Sie hängt die Jacke auf den Kleiderbügel. = She hangs the jacket onto the hanger.
  
  • movement/placement, so accusative

In your sentence, the meaning is close to that second kind of idea.

Kleiderbügel means clothes hanger or simply hanger.

It is another compound noun:

• Kleider = clothes
• Bügel = hanger / frame / bow-shaped support

So auf den Kleiderbügel means onto/on the hanger.

In German, all nouns are capitalized, not just proper names.

So you get:

• die Verkäuferin
• der Reißverschluss
• die Jacke
• der Kleiderbügel

This is a standard spelling rule in German and helps you identify nouns more easily.

Yes. A fairly literal breakdown would be:

• Die Verkäuferin = the saleswoman
• hat = has
• den Reißverschluss = the zipper
• sofort = immediately
• repariert = repaired
• und = and
• jetzt = now
• passt = fits
• die Jacke = the jacket
• wieder = again
• gut = well
• auf den Kleiderbügel = on/onto the hanger

So a literal English version would be:

The saleswoman repaired the zipper immediately, and now the jacket fits well on the hanger again.

That said, the most natural English wording may vary a bit depending on context.