The 7 students in the manual group folded 210 planes in a week (except weekends). How many planes did they fold on average per day?
手工小组的7名同学，一周(双休日除外)折了210个飞机，问他们平均每天折多少个？
<gadget id="calculator">210 / 5 / 7</gadget>
<output>6</output>

<result>6</result>