The machine tool factory originally planned to produce 1,200 machine tools in 40 days, but it was actually completed in 30 days. How many units are actually produced per day?
机床厂原计划40天生产1200台机床，实际30天就完成了．实际每天多生产多少台？
<gadget id="calculator">1_200 / 30</gadget>
<output>40</output>

<gadget id="calculator">1_200 / 40</gadget>
<output>30</output>

<gadget id="calculator">40 - 30</gadget>
<output>10</output>

<result>10</result>