YOU SAID:

I went to the store for some MILK

INTO JAPANESE

私はいくつかのミルクのために店に行きました

BACK INTO ENGLISH

I went to the store for some milk

INTO JAPANESE

ミルクを買いに店に行った

BACK INTO ENGLISH

I went to the store to buy milk

INTO JAPANESE

ミルクを買いに店に行った

BACK INTO ENGLISH

I went to the store to buy milk