The tractor factory planned to produce 65 tractors per day and completed the task in 30 days, but actually completed the task in 25 days. On average, how many more tractors were produced per day than the original plan?
拖拉机厂计划每天生产拖拉机65台，30天完成任务，实际25天完成任务，平均每天比原计划多生产多少台拖拉机？
<gadget id="calculator">65 * 30</gadget>
<output>1_950</output>

<gadget id="calculator">1_950 / 25</gadget>
<output>78</output>

<gadget id="calculator">78 - 65</gadget>
<output>13</output>

<result>13</result>