Evaluate
\frac{2}{21}\approx 0.095238095
Factor
\frac{2}{3 \cdot 7} = 0.09523809523809523
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\frac{1}{2}\times \frac{4}{21}
Divide \frac{1}{2} by \frac{21}{4} by multiplying \frac{1}{2} by the reciprocal of \frac{21}{4}.
\frac{1\times 4}{2\times 21}
Multiply \frac{1}{2} times \frac{4}{21} by multiplying numerator times numerator and denominator times denominator.
\frac{4}{42}
Do the multiplications in the fraction \frac{1\times 4}{2\times 21}.
\frac{2}{21}
Reduce the fraction \frac{4}{42} to lowest terms by extracting and canceling out 2.
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