3 1/5 ton + 5kg +40 ons =…pon

3 1/5 ton + 5 kg + 40 ons = …. pon

= 3 1/5 x 2.000 + 5×2 + 40/5

= 16×2.000/5 + 10 + 8

= 6.400 + 18

= 6.418 pon