Master Wang makes a batch of parts, 40 parts per day, and it can be completed in 25 days. If he makes 5 parts per day, how many days can it be completed?
王师傅做一批零件，每天做40个，25天可以完成，如果每天做5个，多少天可以完成？
<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<gadget id="calculator">25 * 8</gadget>
<output>200</output>

<result>200</result>