Вариант 1:
48135 | 40
- 40 | 1203.375
-----
81
- 80
-----
13
- 0
-----
135
- 120
-----
150
- 120
------
300
- 280
-------
200
- 200
--------
01203.375 - 62 = 1141.375
6:0,15 = 6 : 15/100 = 6 * 100/15 = 600/15 = 40
296,2 - 2,7 - 6,6 + 40 = 293,5 - 6,6 + 40 = 286,9 + 40 = 326,9
7/8 + 15/24 = 21/24 + 15/24 = 36/24 = 3/2
3/8 : 3/2 = 3/8 * 2/3 = 6/24 = 1/4