$$\frac{ 22 }{ 7 } \times \frac{ 7 }{ 4 } \times \frac{ 7 }{ 4 } \times 4$$
$\frac{77}{2}=38.5$
$$\frac{22\times 7}{7\times 4}\times \frac{7}{4}\times 4$$
$$\frac{22}{4}\times \frac{7}{4}\times 4$$
$$\frac{11}{2}\times \frac{7}{4}\times 4$$
$$\frac{11\times 7}{2\times 4}\times 4$$
$$\frac{77}{8}\times 4$$
$$\frac{77\times 4}{8}$$
$$\frac{308}{8}$$
$$\frac{77}{2}$$
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$\frac{7 \cdot 11}{2} = 38\frac{1}{2} = 38.5$
