Luen sopimuksen hitaasti ymmärtääkseni jokaisen kohdan oikein.

Sopimuksen is the object of luen. Here the sentence presents the contract as a whole thing being read, not just part of it, so Finnish uses the total object form. In the singular, that often looks like a genitive -n form.

So:

• luen sopimuksen = I read the whole contract / I read through the contract
• luen sopimusta = I am reading the contract / some of the contract, without focusing on completion

Because sopimus belongs to a noun type that changes its stem when inflected. Many nouns ending in -us behave this way.

For example:

• sopimus → sopimuksen
• kysymys → kysymyksen
• vastaus → vastauksen

So this is not just sopimus + n. The stem changes to sopimukse-, and then the ending is added.

Hitaasti means slowly. It is an adverb, formed from the adjective hidas (slow).

A very common Finnish pattern is:

• adjective + -sti → adverb

So:

• hidas = slow
• hitaasti = slowly

Compare:

• nopea = fast
• nopeasti = quickly

Here ymmärtääkseni means in order for me to understand or more naturally in English, to understand.

So the sentence structure is roughly:

• Luen sopimuksen hitaasti = I read the contract slowly
• ymmärtääkseni jokaisen kohdan oikein = in order to understand every point correctly

It expresses purpose: why am I reading slowly? So that I understand each point correctly.

It is a special infinitive form used to express purpose.

It is built from:

• the verb ymmärtää (to understand)
• the element -kse-
• a possessive suffix, here -ni (my / for me)

So:

• ymmärtää + kse + ni → ymmärtääkseni

This type means in order for me to ...

Examples:

• tehdäkseni = in order for me to do
• nähdäkseni = in order for me to see
• oppiakseni = in order for me to learn

Because jokainen means each / every, and in Finnish it normally goes with a singular noun, not a plural one.

So:

• jokainen kohta = each point / every point
• jokaisen kohdan = each point / every point, in this object form

Both words change form because jokainen agrees with the noun in case.

So here:

• jokaisen = form of jokainen
• kohdan = form of kohta

Together they mean every point or each clause/item.

Because kohdan is the object of ymmärtää. Just like sopimuksen earlier, it is treated as a complete object: the goal is to understand each point correctly, not just some undefined amount of it.

So:

• ymmärtää kohdan = understand the point
• ymmärtää kohtaa would sound more partial or incomplete

In this sentence, Finnish presents the understanding as complete, so kohdan is natural.

Here oikein means correctly. It is an adverb modifying ymmärtää.

So:

• ymmärtää oikein = understand correctly

Do not confuse it with the adjective oikea, which means right / correct.

For example:

• oikea vastaus = the correct answer
• vastata oikein = to answer correctly

No, Finnish word order is fairly flexible, but the given order is natural and neutral.

Luen sopimuksen hitaasti ymmärtääkseni jokaisen kohdan oikein sounds like a normal, straightforward sentence.

You can move parts around for emphasis, but the focus changes. For example:

• Hitaasti luen sopimuksen... puts more emphasis on slowly
• Jokaisen kohdan oikein ymmärtääkseni luen sopimuksen hitaasti is possible, but much more marked and less natural in ordinary speech

So the original order is a good default.

Yes. That would also be correct:

Luen sopimuksen hitaasti, jotta ymmärtäisin jokaisen kohdan oikein.

This means essentially the same thing: I read the contract slowly so that I would understand every point correctly.

The difference is mainly structural:

• ymmärtääkseni is a compact infinitive construction
• jotta ymmärtäisin is a full subordinate clause

The -kse-ni form is especially common when the subject is the same as in the main clause. Since I am both reading and understanding, it fits very well here.

Finnish present tense can cover several meanings that English separates.

Depending on context, luen can mean:

• I read
• I am reading
• sometimes even I will read

In this sentence, English might choose I read the contract slowly... or I am reading the contract slowly... depending on the situation. Finnish does not have a separate present continuous form like English does, so context does the work.

Also, because the object is sopimuksen rather than sopimusta, the sentence gives a sense of reading the contract as a whole, not just being somewhere in the middle of it.