There are 2500 parts to be processed, 1420 parts have been processed, and the remaining 4 days are finished, how many parts are processed per day on average?
要加工2500个零件，已经加工好1420个，剩下的4天加工完，平均每天加工多少个？
<gadget id="calculator">2_500 - 1_420</gadget>
<output>1_080</output>

<gadget id="calculator">1_080 / 4</gadget>
<output>270</output>

<result>270</result>