$$\frac { ( 0.064 - 0.008 ) ( 0.16 - 0.04 ) } { ( 0.016 + 0.08 + 0.04 ) ( 0.4 + 0.2 ) ^ { 3 } }$$
$\frac{35}{153}\approx 0.22875817$
$$\frac{0.056\left(0.16-0.04\right)}{\left(0.016+0.08+0.04\right)\left(0.4+0.2\right)^{3}}$$
$$\frac{0.056\times 0.12}{\left(0.016+0.08+0.04\right)\left(0.4+0.2\right)^{3}}$$
$$\frac{0.00672}{\left(0.016+0.08+0.04\right)\left(0.4+0.2\right)^{3}}$$
$$\frac{0.00672}{\left(0.096+0.04\right)\left(0.4+0.2\right)^{3}}$$
$$\frac{0.00672}{0.136\left(0.4+0.2\right)^{3}}$$
$$\frac{0.00672}{0.136\times 0.6^{3}}$$
$$\frac{0.00672}{0.136\times 0.216}$$
$$\frac{0.00672}{0.029376}$$
$$\frac{6720}{29376}$$
$$\frac{35}{153}$$
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$\frac{5 \cdot 7}{17 \cdot 3 ^ {2}} = 0.22875816993464052$
