The toy factory plans to produce 1,600 "remote control model airplanes". It has been produced for 4 days, and 235 are produced every day. How many more will be produced to complete the task?
玩具厂计划生产"遥控模型飞机"1600架，已经生产了4天，每天生产235架，还要生产多少架才能完成任务？
<gadget id="calculator">4 * 235</gadget>
<output>940</output>

<gadget id="calculator">1_600 - 940</gadget>
<output>660</output>

<result>660</result>