12 plus (2/5) of a number, the sum is 32, what is this number?
12加上一个数的(2/5)，和是32，这个数是多少？
<gadget id="calculator">32 - 12</gadget>
<output>20</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">20 * (5/2)</gadget>
<output>50</output>

<result>50</result>