$$\frac{1+0,6+0,7+0,22}{2\cdot0,7}=$$
$1,8$
$$\frac{1,6+0,7+0,22}{2\times 0,7}$$
$$\frac{2,3+0,22}{2\times 0,7}$$
$$\frac{2,52}{2\times 0,7}$$
$$\frac{2,52}{1,4}$$
$$\frac{252}{140}$$
$$\frac{9}{5}$$
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$\frac{3 ^ {2}}{5} = 1\frac{4}{5} = 1.8$
