(1 2/3 - 3/8) : 2 2/5=
1) 1 2/3- 3/8=5/3-3/8=40/24-9/24=31/24=1 7/24
2) 1 7/24 : 2 2/5=31/24: 12/5=31/24* 5/12=155/288
(1 2/3 - 3/8) : 2 2/5=
1) 1 2/3- 3/8=5/3-3/8=40/24-9/24=31/24=1 7/24
2) 1 7/24 : 2 2/5=31/24: 12/5=31/24* 5/12=155/288