The children's toy factory produces a batch of "Transformers" toys. The original plan is to produce 3,500 pieces per day, which can be completed in one week (overtime work on Saturdays and normal rest on Sundays). The actual number of toys produced every day is only 1.2 times the original plan. How many days were actually produced?
儿童玩具厂生产一批"变形金刚"的玩具，原计划每天生产3500只，一周(周六加班、周日照常休息)能完成．实际每天生产的玩具只数是原计划的1.2倍，实际生产了多少天？
<gadget id="calculator">3_500 * 1.2</gadget>
<output>4_200</output>

<gadget id="calculator">6 / 4_200</gadget>
<output>1/700 = around 0.001429</output>

<gadget id="calculator">3_500 * (1/700)</gadget>
<output>5</output>

<result>5</result>