YOU SAID:
i really do not understand this math
INTO JAPANESE
この数学が本当にわかりません
BACK INTO ENGLISH
I really don't understand this math
INTO JAPANESE
この計算が本当にわかりません
BACK INTO ENGLISH
I really don't understand this calculation
INTO JAPANESE
この計算が本当にわかりません
BACK INTO ENGLISH
I really don't understand this calculation
You've done this before, haven't you.