The factory produces generators. It was originally planned to produce 36 units per day, and it took 10 days to complete the task. In fact, it only took 9 days to complete the task. How many more units are actually produced per day than originally planned?
工厂生产发电机，原计划每天生产36台，10天完成，实际只用9天就完成任务．实际每天比原计划多生产多少台？
<gadget id="calculator">10 / 9</gadget>
<output>10/9 = around 1.111111</output>

<gadget id="calculator">36 * (10/9)</gadget>
<output>40</output>

<gadget id="calculator">40 - 36</gadget>
<output>4</output>

<result>4</result>