2 2/5 × 1 ½ +4 2/5 : 1 1/10 - 1 ½

2 2/5 x 1 1/2 + 4 2/4 : 1 1/10 - 1 1/2
= 12/5 x 3/2 + 18/4 : 11/10 - 3/2
= 18/5 + 9/2 x 10/11 - 3/2
= 18/5 + 90/22 - 3/2
= 18/5 + 45/11 - 3/2
= 396/110 + 450/110 - 165/110
= 681/110
= 6 21/110