Условие:

60 : 6;
80 : 8;
(25 + 35) : 10;
(47 + 23) : 7;
6222;
82222.

60 : 6 = 10;
80 : 8 = 10;
(25 + 35) : 10 = 60 : 10 = 6;
(47 + 23) : 7 = 70 : 7 = 10;
6222 = 6 − (2 + 2 + 2) = 6 * 2 * 3 = 66 = 0;
82222 = 8 − (2 + 2 + 2 + 2) = 82 * 4 = 88 = 0.