This is the 5225th most frequent Korean word.
달러에
"달러에" means "in/at/for dollars" in English, often referring to an amount or exchange rate involving dollars.
Here, "달러에" is used to express the currency in which the payment was made.
나는 미국에서 구입한 기념품을 달러에 계산했어요.
I paid for the souvenir bought in the US in dollars.
In this sentence, "달러에" indicates the medium or object of investment.
환율이 오를 때는 달러에 투자하는 사람들이 많아져요.
When the exchange rate rises, more people invest in dollars.
"달러에" here is to show something associated or related to dollars, specifically demand.