2 1/22×2 17/30:1,3125-3,99

2 1/22 * 2 17/30 : 1,3125 - 3,99 = 0,01

1) 2 1/22 * 2 17/30 = 45/22 * 77/30 = (3*7)/(2*2) = 21/4 = 5,25
2) 5,25 : 1,3125 = 4
3) 4 - 3,99 = 0,01