If ‘+’ means ‘×’, '×’ means ‘÷’, ‘-’ means ‘+’ and ‘÷’ means ‘-’, then 24 – 12 × 3 ÷ 5 + 2 = ?

8 36 40 18

18

24 – 12 × 3 ÷ 5 + 2             After interchange the signs;             = 24 + 12 ÷ 3 - 5 × 2             = 24 + 4 – 10             = 28 – 10              = 18