$$\frac{ 7/7 }{ 188-77777777 }$$
$-\frac{1}{77777589}\approx -0.000000013$
$$\frac{1}{188-77777777}$$
$$\frac{1}{-77777589}$$
$$-\frac{1}{77777589}$$
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$-\frac{1}{77777589} = -1.2857174063341048 \times 10^{-8}$