$$7 \times 4 \frac { 1 } { 4 }$$
$\frac{119}{4}=29.75$
$$7\times \frac{16+1}{4}$$
$$7\times \frac{17}{4}$$
$$\frac{7\times 17}{4}$$
$$\frac{119}{4}$$
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$\frac{7 \cdot 17}{2 ^ {2}} = 29\frac{3}{4} = 29.75$
