YOU SAID:
How many onions are grown
INTO JAPANESE
タマネギの数を栽培している
BACK INTO ENGLISH
growing a number of onions
INTO JAPANESE
タマネギの数を育てる
BACK INTO ENGLISH
Grow the number of onions
INTO JAPANESE
タマネギの数を増やす
BACK INTO ENGLISH
Increase the number of onions
INTO JAPANESE
タマネギの数を増やす
BACK INTO ENGLISH
Increase the number of onions
That didn't even make that much sense in English.