If the sum of (3/5) plus 16 is 28, what is the number?
一个数的(3/5)加上16的和是28，则这个数为多少．
<gadget id="calculator">28 - 16</gadget>
<output>12</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">12 / (3/5)</gadget>
<output>20</output>

<result>20</result>