Найдите значение выражения 2 2/3 * 9/32 * 5 1/3 4 2/5 * 15/77 * 7/20 18/25 *10/27 7 1/2 5 2/5 * 40/81 * 15/16 ,.мне нужно .

2 2/3 * 9/32 * 5 1/3 = 8/3 * 9/32 * 16/3 = 3/4 * 16/3 = 4
4 2/5 * 15/77 * 7/20 = 22/5 * 15/77 * 7/20 = 6/7 * 7/20 = 3/10
18/25 * 10/27 * 7 1/2 = 18/25 * 10/27 * 15/2 = 4/15 * 15/2 = 2
5 2/5 * 40/81 * 15/16 = 27/5 * 40/81 * 15/16 = 24/9 * 15/16 = 15/6 = 2 3/6 = 2 1/2