If number A + number B = 60, number A / number B = (2/3), then number A = how much
如果甲数+乙数=60，甲数/乙数=(2/3)，那么甲数=多少
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">60 / (5/3)</gadget>
<output>36</output>

<gadget id="calculator">36 * (2/3)</gadget>
<output>24</output>

<result>24</result>