There are lots of possiblities:
2*42
3*28
etc.
More specific please.
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4 times 21 equals 84.
42 x 42 = 1764 42 + 42 = 84
84
that 14 can go into 84 and that 84 is a multiple of 14
No;18/84 approximately equals .214and,6/56 approximately equals .107