YOU SAID:
the longest i have been away from my 16 children is 2 weeks.
INTO JAPANESE
私が16人の子供から離れた最長期間は2週間です。
BACK INTO ENGLISH
The longest time I have been away from 16 children is 2 weeks.
INTO JAPANESE
私が16人の子供から離れた最長時間は2週間です。
BACK INTO ENGLISH
The longest time I have been away from 16 children is 2 weeks.
You've done this before, haven't you.