The car assembly team plans to assemble 240 cars in 12 days, but actually assembles 30 cars per day. How many more cars are actually assembled per day than planned?
汽车装配组计划12天装配汽车240辆，实际每天装配30辆，实际每天比计划多装配多少辆？
<gadget id="calculator">240 / 12</gadget>
<output>20</output>

<gadget id="calculator">30 - 20</gadget>
<output>10</output>

<result>10</result>