$$2 \frac { 5 } { 8 } 4 \frac { 3 } { 7 } = ?$$
$\frac{93}{8}=11.625$
$$\frac{16+5}{8}\times \frac{4\times 7+3}{7}$$
$$\frac{21}{8}\times \frac{4\times 7+3}{7}$$
$$\frac{21}{8}\times \frac{28+3}{7}$$
$$\frac{21}{8}\times \frac{31}{7}$$
$$\frac{21\times 31}{8\times 7}$$
$$\frac{651}{56}$$
$$\frac{93}{8}$$
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$\frac{3 \cdot 31}{2 ^ {3}} = 11\frac{5}{8} = 11.625$