$$3/4/8 \sqrt{ 5 } \times 10^{ }$$
$\frac{15\sqrt{5}}{16}\approx 2.096313729$
$$\frac{3}{4\times 8}\sqrt{5}\times 10^{1}$$
$$\frac{3}{32}\sqrt{5}\times 10^{1}$$
$$\frac{3}{32}\sqrt{5}\times 10$$
$$\frac{3\times 10}{32}\sqrt{5}$$
$$\frac{30}{32}\sqrt{5}$$
$$\frac{15}{16}\sqrt{5}$$
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