YOU SAID:
I need ten dollars so i can buy myself ten donuts
INTO JAPANESE
ドーナツを10個買うために10ドル必要です
BACK INTO ENGLISH
I need $10 to buy 10 donuts.
INTO JAPANESE
ドーナツを10個買うには10ドル必要です。
BACK INTO ENGLISH
It costs $10 to buy 10 donuts.
INTO JAPANESE
ドーナツを10個買うのに10ドルかかります。
BACK INTO ENGLISH
It costs $10 to buy 10 donuts.
Well done, yes, well done!