-7/8 x 1/7
Or simply cancel the 7's:
$$-\frac{7}{8}*\frac{1}{7}=-\frac{1}{8}*\frac{1}{1}=-\frac{1}{8}=-0.125$$
-.125
-7/8= -.875
1/7=.1428571429...
-.875x.1428571429...=-.125