The school aid factory needs to produce 1350 sets of school aids, 860 sets have already been produced, and the rest will be completed within 7 days. How many sets are produced on average per day?
学具厂要生产1350套学具，已经生产了860套，剩下的要在7天完成，平均每天生产多少套？
<gadget id="calculator">1_350 - 860</gadget>
<output>490</output>

<gadget id="calculator">490 / 7</gadget>
<output>70</output>

<result>70</result>