$$\frac{4}{11}+\frac{3}{8}+(-\frac{7}{8})+(-\frac{-20}{11})$$
$\frac{37}{22}\approx 1.681818182$
$$\frac{32}{88}+\frac{33}{88}-\frac{7}{8}-\frac{-20}{11}$$
$$\frac{32+33}{88}-\frac{7}{8}-\frac{-20}{11}$$
$$\frac{65}{88}-\frac{7}{8}-\frac{-20}{11}$$
$$\frac{65}{88}-\frac{77}{88}-\frac{-20}{11}$$
$$\frac{65-77}{88}-\frac{-20}{11}$$
$$\frac{-12}{88}-\frac{-20}{11}$$
$$-\frac{3}{22}-\frac{-20}{11}$$
$$-\frac{3}{22}-\left(-\frac{20}{11}\right)$$
$$-\frac{3}{22}+\frac{20}{11}$$
$$-\frac{3}{22}+\frac{40}{22}$$
$$\frac{-3+40}{22}$$
$$\frac{37}{22}$$
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$\frac{37}{2 \cdot 11} = 1\frac{15}{22} = 1.6818181818181819$
