$$3/4/2/5-1+1$$
$\frac{3}{40}=0.075$
$$\frac{\frac{3}{4}}{2\times 5}-1+1$$
$$\frac{\frac{3}{4}}{10}-1+1$$
$$\frac{3}{4\times 10}-1+1$$
$$\frac{3}{40}-1+1$$
$$\frac{3}{40}-\frac{40}{40}+1$$
$$\frac{3-40}{40}+1$$
$$-\frac{37}{40}+1$$
$$-\frac{37}{40}+\frac{40}{40}$$
$$\frac{-37+40}{40}$$
$$\frac{3}{40}$$
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$\frac{3}{2 ^ {3} \cdot 5} = 0.075$