The refrigerator factory plans to produce 940 refrigerators. It has been in production for 9 days. If it produces 80 refrigerators per day on average, how many more refrigerators must be produced to complete the task?
冰箱厂计划生产冰箱940台，已经生产9天，平均每天生产80台还要再生产多少台，才能完成任务？
<gadget id="calculator">80 * 9</gadget>
<output>720</output>

<gadget id="calculator">940 - 720</gadget>
<output>220</output>

<result>220</result>