$$=\tan^{-1}\frac{93.99}{143.541})$$
$\frac{1000000000000000000}{11428834862876687}\approx 87.497983128$
$$0.011428834862876687 ^ {-1}$$
$$\frac{1000000000000000000}{11428834862876687}$$
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$\frac{2 ^ {18} \cdot 5 ^ {18}}{89 \cdot 97 \cdot 1323854380039} = 87\frac{5691366929728144}{11428834862876688} = 87.49798312759027$
