(3/4) of number A is equal to number B, how much less number B is than number A.
甲数的(3/4)等于乙数，乙数比甲数少多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) / 1</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>