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21 x 42 = 882
1/2 times 42 = 21
It is: 250/21 times 42 = 500
How about: 2 times 21 = 42
42 ÷ 2 = 21
21
42 because 21 times 2 is 42 and 14 times 3 is 42
42 2 times 21 is 42 3 time 14 is 42
42 ÷ 21 = 2
21 x 2 = 42