If one quarter of a number is subtracted from 5, and the result is 5, what is the number equal to?
一个数的四分之一减去5，结果等于5，则这个数等于多少．
<gadget id="calculator">5 + 5</gadget>
<output>10</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">10 / (1/4)</gadget>
<output>40</output>

<result>40</result>