YOU SAID:

there is luck in the leftovers

INTO JAPANESE

残り物には運がある

BACK INTO ENGLISH

There's luck in the rest.

INTO JAPANESE

残りの部分には幸運があります。

BACK INTO ENGLISH

There is good luck for the rest.

INTO JAPANESE

残りは幸運です。

BACK INTO ENGLISH

The rest are lucky.

INTO JAPANESE

残りはラッキーです。

BACK INTO ENGLISH

The rest are lucky.