The tent leader originally planned to produce 1.2 million disaster relief tents in 20 days, but due to the emergency of the disaster, the goods were delivered 5 days ahead of schedule. How many more tents are actually produced per day than planned?
帐篷长原计划用20天生产120万顶救灾帐篷，结果由于灾情紧急，提前5天交了货，实际每天比计划多生产多少顶帐篷？
<gadget id="calculator">20 - 5</gadget>
<output>15</output>

<gadget id="calculator">120 / 15</gadget>
<output>8</output>

<gadget id="calculator">120 / 20</gadget>
<output>6</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<result>2</result>