$$\frac{ 3 }{ 8 } \frac{ 6 }{ 8 } \frac{ 9 }{ 8 } + \frac{ { 8 }^{ 2 } }{ }$$
$\frac{16465}{256}=64.31640625$
$$\frac{3}{8}\times \frac{3}{4}\times \frac{9}{8}+\frac{8^{2}}{1}$$
$$\frac{3\times 3}{8\times 4}\times \frac{9}{8}+\frac{8^{2}}{1}$$
$$\frac{9}{32}\times \frac{9}{8}+\frac{8^{2}}{1}$$
$$\frac{9\times 9}{32\times 8}+\frac{8^{2}}{1}$$
$$\frac{81}{256}+\frac{8^{2}}{1}$$
$$\frac{81}{256}+\frac{64}{1}$$
$$\frac{81}{256}+64$$
$$\frac{81}{256}+\frac{16384}{256}$$
$$\frac{81+16384}{256}$$
$$\frac{16465}{256}$$
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$\frac{5 \cdot 37 \cdot 89}{2 ^ {8}} = 64\frac{81}{256} = 64.31640625$