The number A is (1/8) of the number B, and the number B is the sum of the two numbers of A and B ((())/(())), how much less is the number A than the B number
甲数是乙数的(1/8)，乙数是甲乙两数和的((())/(()))，甲数比乙数少多少
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

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