If a number is divided by 5, subtracted from 5, and multiplied by 5, the result is 5. What is the number?
一个数除以5，减去5，再乘以5，结果等于5，这个数是多少．
<gadget id="calculator">5 / 5</gadget>
<output>1</output>

<gadget id="calculator">1 + 5</gadget>
<output>6</output>

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<result>30</result>