合計
I do the math.
私は計算します
I add up the total of my food expenses.
私は食費の合計を計算します
I add up the total of my food expenses at home using my household ledger.
私は家で家計簿を使って食費の合計を計算します
I add up the total of my food expenses at home using my household ledger at the end of every month.
私は毎月末に家で家計簿を使って食費の合計を計算します
I add up the total of my food expenses at home with my husband using my household ledger at the end of every month.
私は夫と毎月末に家で家計簿を使って食費の合計を計算します