3*3*3*3*10 = 7*7*7*99*2*2*2*2 = 5*5*5*5*31 = 6*6*7*7*3*3*3=

Первый пример.

3 * 3 * 3 * 3 * 10 = 810;

3 * 3 = 9;

9 * 3 = 27;

27 * 3 = 81;

81 * 10 = 810.

Второй пример.

7 * 7 * 7 * 99 * 2 * 2 * 2 * 2 = 543 312;

7 * 7 = 49;

49 * 7 = 343;

343 * 99 = 33 957;

33 957 * 2 = 67 914;

67 914 * 2 = 135 828;

135 828 * 2 = 271 656;

271 656 * 2 = 543 312.

Третий пример.

5 * 5 * 5 * 5 * 31 = 19 375;

5 * 5 = 25;

25 * 5 = 125;

125 * 5 = 625;

625 * 31 = 19 375.

Четвертый пример.

6 * 6 * 7 * 7 * 3 * 3 * 3 = 47 628;

6 * 6 = 36;

36 * 7 = 252;

252 * 7 = 1764;

1764 * 3 = 5292;

5292 * 3 = 15 876;

15 876 * 3 = 47 628.