Evaluate
\frac{319}{4}=79.75
Factor
\frac{11 \cdot 29}{2 ^ {2}} = 79\frac{3}{4} = 79.75
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\frac{320}{4}-\frac{1}{4}
Convert 80 to fraction \frac{320}{4}.
\frac{320-1}{4}
Since \frac{320}{4} and \frac{1}{4} have the same denominator, subtract them by subtracting their numerators.
\frac{319}{4}
Subtract 1 from 320 to get 319.
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