Divided by ⑦ (for example, there are 72 days, 72÷7= 10. . . . . . 2)

Find out the start date of this summer vacation (for example, Wednesday)

Find the end date (Wednesday +2 days = Friday)

Just find out how many Fridays there are (for example, if there are 10 complete weeks, there will be 10 Fridays, plus the last day, so there will be 1 1).

Hope to adopt, O(∩_∩)O Thank you.