The workshop originally planned to produce 15 machines per day, which could be completed in 24 days, but actually produced 3 more machines per day than planned, and it only took a few days to complete the task?
车间原计划每天生产15台机器，24天就可以完成，实际每天比计划多生产3台，实际只要几天就可以完成任务？
<gadget id="calculator">15 + 3</gadget>
<output>18</output>

<gadget id="calculator">24 / 18</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">15 * (4/3)</gadget>
<output>20</output>

<result>20</result>