32% of the number A is equivalent to (2/5) of the number B. The number A is 40. What is the number B?
甲数的32%相当乙数的(2/5)，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">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(8/25) / (2/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">40 * (4/5)</gadget>
<output>32</output>

<result>32</result>