jigap ane jipyega eobseoseo dongjeoneuroman gyesanhaesseoyo.

지갑 안에 means inside the wallet.

• 안 = inside
• 에 = location marker
• So 안에 = in/inside

You could also say 지갑에, and that would still be understandable as in the wallet, but 지갑 안에 is more explicit. It emphasizes that the bills were not physically inside the wallet.

Because 없다 works with the thing that does not exist or is not present, and that thing is usually marked with 이/가.

So:

• 지폐가 없다 = there are no bills / I don’t have any bills

Here, 지폐가 is the thing being absent.
Using 를 would be wrong, because 없다 does not take a direct object in this way.

없어서 is 없다 + -아서/어서, which means because there wasn’t / since there wasn’t.

So:

• 지폐가 없어서 = because there were no bills
• more naturally in English here: because I didn’t have any bills

This form connects the reason to the next action:

• 지폐가 없어서 동전으로만 계산했어요
• Because I had no bills, I paid only with coins.

지폐 specifically means paper money / bills / banknotes, while 돈 just means money in general.

So this sentence is making a specific contrast:

• 지폐 = bills
• 동전 = coins

If you used 돈이 없어서, it would sound like because I had no money, which changes the meaning. The speaker did have money—they just only had coins.

동전으로만 means only with coins or using only coins.

Breakdown:

• 동전 = coins
• 으로 = by means of / with / using
• 만 = only

So:

• 동전으로 = with coins / using coins
• 동전으로만 = only with coins

In this sentence, it tells you the method used for paying.

Because the speaker is not just saying only coins as a noun phrase. They are saying only by using coins.

Compare:

• 동전만 = only coins
• 동전으로만 = only with coins / only by means of coins

Here the important idea is the method of payment, so 으로만 is the natural choice.

Not in this sentence. Although 계산하다 can literally mean to calculate, it very often means to pay the bill, to settle the payment, or to check out, depending on context.

Here:

• 동전으로만 계산했어요 = I paid using only coins

So this is a common Korean usage where 계산하다 is used in a shopping or restaurant situation.

Korean often omits information that is obvious from context.

So in 동전으로만 계산했어요, the object is left out because it is understood. It could mean:

• paid for the purchase
• paid the bill
• settled the amount due

In English, we often need to add something like I paid the bill or I paid for it, but Korean does not need to say that if the situation is clear.

계산했어요 is the polite past form of 계산하다.

Breakdown:

• 계산하다 = to pay / to calculate
• 계산했어요 = paid / calculated

The ending -어요 makes it polite and conversational.
The 했- part shows past tense.

So this sentence is in standard polite speech, which is very common in everyday Korean.

That is a very common Korean sentence pattern.

Korean often puts:

1. the background or reason first
2. the main action second

So:

• 지폐가 없어서 = because there were no bills
• 동전으로만 계산했어요 = I paid only with coins

This order feels very natural in Korean. English can do the same thing, but English is also very comfortable with reversing it:

• Because I had no bills, I paid only with coins.
• I paid only with coins because I had no bills.

Both are fine in English, but Korean strongly prefers the reason clause before the final main verb.

Yes, 지폐가 없으니까 동전으로만 계산했어요 is possible, but the nuance is a little different.

• -아서/어서 often sounds like a simple explanation of cause and result
• -(으)니까 often sounds a bit more subjective, assertive, or like the speaker is giving a reason

In a straightforward narration of what happened, 없어서 sounds very natural.

So:

• 지폐가 없어서 동전으로만 계산했어요 = neutral, natural explanation
• 지폐가 없으니까 동전으로만 계산했어요 = also possible, but slightly more like since I didn’t have any bills...

Yes. The subject is omitted because Korean often leaves it out when it is obvious from context.

The sentence naturally implies I:

• (제가) 지갑 안에 지폐가 없어서 동전으로만 계산했어요.
• I didn’t have any bills in my wallet, so I paid only with coins.

You could add 제가 if you wanted emphasis, but normally it is unnecessary.

Yes, exactly. That is the point.

It specifically says:

• There were no bills in the wallet

It does not mean there was no money at all. In fact, the second half shows there were coins available:

• 동전으로만 계산했어요 = paid only with coins

So the sentence clearly contrasts no paper money with having coins.