If 20x/2=36, then x/5=how much.
如果20x/2=36，那么x/5=多少．
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">36 / 10 / 5</gadget>
<output>18/25 = around 0.72</output>

<result>18/25 = around 0.72</result>