A number (5/9) is 20, what is this number?
一个数的(5/9)是20，这个数是多少？
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">20 / (5/9)</gadget>
<output>36</output>

<result>36</result>