Answer
$\frac{7}{8}$
Work Step by Step
0.875
The digits to the right of the decimal point, 875, are the numerator of the fraction. The denominator is 1000 for thousandths because the rightmost digit is in the thousandths place.
i.e. $\frac{875}{1000}$
= $\frac{875\div125}{1000\div125}$ (Divide both numerator and denominator by 125)
= $\frac{7}{8}$ (Lowest Terms)