2 * 2 * 2 = 8
6 * 6 = 36
-4 * -4 = 16
- 2 * -2 * -2 = - 8
1/3 * 1/3 * 1/3= 1/27
2/5 * 2/5 * 2/5 * 2/5 = 16/625
5/4 * 5/4 = 25/16
-3/7 * - 3/7 = 9/21
-2/10 * - 2/10 * - 2/10 = - 8/1000
