YOU SAID:

i would like one order of french fries

INTO JAPANESE

フライドポテトを1オーダーお願いします

BACK INTO ENGLISH

I'd like an order of 1 French fries

INTO JAPANESE

フライドポテトを1個注文してください

BACK INTO ENGLISH

Please order one french fries

INTO JAPANESE

フライドポテトを1つ注文してください

BACK INTO ENGLISH

Please order one french fries