2 1/3 * 1 1/7 * 1 1/5 / 3 3/5 * 4 2/3* 6 5/7=

Расставим действия:

        1          2           3          4       5

2 1/3 * 1 1/7 * 1 1/5 : 3 3/5 * 4 2/3 * 6 5/7 = 27 161/189.

1) 2 1/3 * 1 1/7 = 7/3 * 8/7 = 8/3;

2) 8/3 * 1 1/5 = 8/3 * 6/5 = 48/15 = 16/5;

3) 16/5 : 3 3/5 = 16/5 : 18/5 = 16/5 * 5/18 = 8/9;

4) 8/9 * 4 2/3 = 8/9 * 14/3 = 112/27;

5) 112/27 * 6 5/7 = 112/27 * 47/7 = 5264/189 = 27 161/189.