32% of the number A is equivalent to (4/5) of the number B, the number A is 40, what is the number B.
甲数的32%相当于乙数的(4/5)，甲数是40，乙数是多少．
<gadget id="calculator">32 / 100</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(8/25) / (4/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">40 * (2/5)</gadget>
<output>16</output>

<result>16</result>