40.024 of 54.89% of 19.9 = ? × √(2661.98/22.09)
ATQ, 40.024 of 54.89% of 19.9 = ? × √(2661.98/22.09) 40 of 55% of 20 ~ ? × √(2662/22) 440 ~ ? × √121 ? ~ 40
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