A factory plans to produce 980 parts, but has already produced 560 parts, and the rest will take 7 days to complete. How many are produced on average per day?
某厂计划生产980个零件，已经生产了560个，剩下的要用7天完成．平均每天要生产多少个？
<gadget id="calculator">980 - 560</gadget>
<output>420</output>

<gadget id="calculator">420 / 7</gadget>
<output>60</output>

<result>60</result>