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2 x 3 x 3 x 5 = 90 21 x 32 x 51 = 90
90 = 21 x 32 x 51
210 x 0.9 = 189 Therefore, 90 percent of 210 is equal to 189.
21% of 90= 21% * 90= 0.21 * 90= 18.9
The answer is -824.