Evaluate
\frac{4}{21}\approx 0.19047619
Factor
\frac{2 ^ {2}}{3 \cdot 7} = 0.19047619047619047
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\frac{3\times 4}{7\times 9}
Multiply \frac{3}{7} times \frac{4}{9} by multiplying numerator times numerator and denominator times denominator.
\frac{12}{63}
Do the multiplications in the fraction \frac{3\times 4}{7\times 9}.
\frac{4}{21}
Reduce the fraction \frac{12}{63} to lowest terms by extracting and canceling out 3.
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