The ratio of number A to number B is 7:8, then number A is the number of B ((())/(())).
甲数和乙数的比是7：8，则甲数是乙数的((())/(()))．
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<result>7/8 = around 0.875</result>