The machine factory produces a batch of parts. The original plan is to produce 240 parts per day, and it will be completed in 20 days. In fact, 60 more parts will be produced per day. How many days will it actually be completed?
机器厂生产一批零件，原计划每天生产240个，20天完成，实际每天多生产60个，实际多少天完成？
<gadget id="calculator">240 * 20</gadget>
<output>4_800</output>

<gadget id="calculator">240 + 60</gadget>
<output>300</output>

<gadget id="calculator">4_800 / 300</gadget>
<output>16</output>

<result>16</result>