умножение 9 * 4 1/6=, 3 17/21* 3 1/8=, 16 2/3* 1 1/5=, 5 2/5* 3 1/3=, 1 2/7* 1 1/4=, 33 1/3*1 1/5=, 2 2/5* 13 1/3=, 5 3/4* 1 1/7=, 2 3/4* 3 1/3=, 3 1/3* 3 3/5=, 6 1/2*1 1/39=, 2 4/5*6 3/7=, 3 1/16*1 5/7=, 3 7/9* 1 1/17=

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