Evaluate
\frac{21}{500}=0.042
Factor
\frac{3 \cdot 7}{2 ^ {2} \cdot 5 ^ {3}} = 0.042
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21\times 10^{-5}\times 200
Multiply 3 and 7 to get 21.
21\times \frac{1}{100000}\times 200
Calculate 10 to the power of -5 and get \frac{1}{100000}.
\frac{21}{100000}\times 200
Multiply 21 and \frac{1}{100000} to get \frac{21}{100000}.
\frac{21}{500}
Multiply \frac{21}{100000} and 200 to get \frac{21}{500}.
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