Evaluate
\frac{15}{256}=0.05859375
Factor
\frac{3 \cdot 5}{2 ^ {8}} = 0.05859375
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\frac{3\times 5}{8\times 32}
Multiply \frac{3}{8} times \frac{5}{32} by multiplying numerator times numerator and denominator times denominator.
\frac{15}{256}
Do the multiplications in the fraction \frac{3\times 5}{8\times 32}.
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