(3/4) of the number A is equal to (1/5) of the number B, and the number A is the number of B.
甲数的(3/4)等于乙数的(1/5)，甲数是乙数的多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/5) / (3/4)</gadget>
<output>4/15 = around 0.266667</output>

<result>4/15 = around 0.266667</result>