The toy factory produces 1,800 toys. It was originally planned to be completed in 45 days, but it was actually completed in 30 days. How many more toys are actually produced per day than the original plan?
玩具厂生产1800件玩具，原计划45天完成，实际30天完成，实际每天比原计划多做多少件？
<gadget id="calculator">1_800 / 30</gadget>
<output>60</output>

<gadget id="calculator">1_800 / 45</gadget>
<output>40</output>

<gadget id="calculator">60 - 40</gadget>
<output>20</output>

<result>20</result>