workshop needs to process 9,000 parts. It has been processed for 5 days, with an average of 800 parts per day. The remaining parts are required to be completed in 4 days. How many parts are processed per day on average?
某车间要加工9000个零件，已加工了5天，平均每天加工800个，剩下的要求4天完成，平均每天加工多少个？
<gadget id="calculator">800 * 6</gadget>
<output>4_800</output>

<gadget id="calculator">9_000 - 4_800</gadget>
<output>4_200</output>

<gadget id="calculator">4_200 / 4</gadget>
<output>1_050</output>

<result>1_050</result>