The difference between 325 and (3/5) of a number is 25. What is the number?
325减去一个数的(3/5)的差是25，这个数是多少？
<gadget id="calculator">325 - 25</gadget>
<output>300</output>

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

<gadget id="calculator">300 / (3/5)</gadget>
<output>500</output>

<result>500</result>