yeongsujeungeun seorap ane moa duseyo.

은 is the topic marker, so 영수증은 means something like as for the receipts... or when it comes to receipts...

In instructions, this can sound natural because the speaker is setting the topic and then saying what should be done with it.

If you said 영수증을 서랍 안에 모아 두세요, that would also be grammatical. It sounds a bit more like a direct instruction with receipts as the object of the verb. The version with 은 can feel slightly more like for receipts, keep them collected in the drawer.

It breaks down like this:

• 서랍 = drawer
• 안 = inside
• 에 = location/destination marker

So 서랍 안에 means inside the drawer or in the drawer.

Korean often uses a noun like 안 for inside, so instead of one word, it is built as drawer + inside + particle.

에 is used because the drawer is the place where the receipts are to be kept.

Here, the idea is not really doing the action at the drawer in the sense of an active workplace location. It is more like put them in that location and leave them there.

• 에 = to / in / at a place as a destination or resulting location
• 에서 = at / in a place where an action takes place

Because this sentence is about keeping the receipts stored in the drawer, 에 is the natural choice.

모아 두세요 comes from:

• 모으다 = to gather, collect
• 모아 = connective form
• 두다 = to put, leave, keep

When -아/어 두다 is added, it often means do something and leave it in that state, often for later use or as a continued arrangement.

So:

• 모으세요 = collect them
• 모아 두세요 = collect them and keep them that way / put them aside collected

This makes the sentence sound more like please gather the receipts and keep them in the drawer rather than just please collect the receipts.

Yes. 두세요 is a polite request/command form.

It comes from 두다 with the polite ending -세요, which is commonly used for instructions, requests, and polite commands.

So the tone is polite but still clearly instructive:

• softer than a very formal command
• natural in workplaces, homes, notices, or spoken instructions

It is basically saying please do this.

Because 두다 here functions as an auxiliary verb, and in standard spacing it is usually written separately after the -아/어 form.

So:

• 모아 두세요 = standard spacing

In speech, it may sound very close together, almost like one unit, but the normal written form separates them.

It can be either, depending on context.

Korean nouns usually do not have to show singular vs. plural. So 영수증 can mean:

• a receipt
• receipts

In this kind of instruction, it is usually understood more generally as receipts.

If the speaker wanted to emphasize plurality, they could say 영수증들, but that is often unnecessary.

Yes. Korean often leaves the subject out when it is obvious from context.

In a sentence like this, the understood subject is usually you:

• (You) please keep the receipts collected in the drawer.

This is very normal in Korean, especially in commands and instructions.

It can.

The topic marker 은 often has a mild contrastive feeling, depending on context. For example, it can suggest something like:

• As for the receipts, put them in the drawer
• perhaps contrasting with other items that should go somewhere else

But this contrast does not have to be strong. In many real situations, it just sets 영수증 as the topic naturally.

So the nuance depends on context:

• sometimes just topical
• sometimes slightly contrastive

Yes.

Because of 모아 두세요, it can sound like a standing instruction: keep collecting and storing them there.

So it works well for:

• a one-time request in the moment
• a general rule or routine

That is one reason this form is common in practical instructions.