(1/5) of number A is equal to (1/6) of number B. If number A is 20, what is the number of B?
甲数的(1/5)与乙数的(1/6)相等，如果甲数是20，那么乙数是多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">20 * (1/5)</gadget>
<output>4</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">4 / (1/6)</gadget>
<output>24</output>

<result>24</result>