(1/4) of A's number is 3 times of B's number, B's number is 7, what is A's number?
甲数的(1/4)是乙数的3倍，乙数是7，甲数是多少？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / (1/4)</gadget>
<output>12</output>

<gadget id="calculator">7 * 12</gadget>
<output>84</output>

<result>84</result>