YOU SAID:

That guy is eating a sandwich made by sand and bread

INTO JAPANESE

あの男は砂とパンで作ったサンドイッチを食べている

BACK INTO ENGLISH

That man is eating a sandwich made of sand and bread

INTO JAPANESE

あの男は砂とパンで作ったサンドイッチを食べている

BACK INTO ENGLISH

That man is eating a sandwich made of sand and bread