The number A is (3/8) of the number B, how much less is the number A than the B number.
甲数是乙数的(3/8)，甲数比乙数少多少．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>