1 1 per 5 + 3 1 per 2 : 2 1 per 6 Tolong dibantu please

1 1/5 + 3 1/2 : 2 1/6 =
6/5 + 7/2 : 13/6 =
6/5 + 7/2 x 6/13 =
6/5 + 21/13 =
(78 + 105)/65 = 183/65 = 2 53/65 (sorry kalau salah)