Evaluate
\frac{1}{84}\approx 0.011904762
Factor
\frac{1}{2 ^ {2} \cdot 3 \cdot 7} = 0.011904761904761904
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\frac{1}{20\times 21}\times 5
Subtract 20 from 21 to get 1.
\frac{1}{420}\times 5
Multiply 20 and 21 to get 420.
\frac{5}{420}
Multiply \frac{1}{420} and 5 to get \frac{5}{420}.
\frac{1}{84}
Reduce the fraction \frac{5}{420} to lowest terms by extracting and canceling out 5.
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