Assuming a year duration of exactly 52 weeks, there are a total of 1642/52 = 31 years 30 weeks in 1642 weeks.
312 weeks
75 weeks is about 1.437 average years.
520
104
104 WEEK
78
There are 52 complete weeks in one year. Therefore, 208 weeks is equal to 208/52 = 4 years.
There are 52 weeks in one year. Therefore, 6 years is equal to 52 x 6 = 312 weeks.
Assuming a week of exactly 52 weeks, 506 weeks is equal to 506/52 = 9.7307692 recurring (that is, 9.7307692307692...) years or 9 years 38 weeks.
There are 52 weeks in a year. Therefore, 240 weeks is equal to 240/52 = 4 remainder 32 or four years 32 weeks.
853
1 year = 52 1/7 weeks (not counting leap years) 21 years = 1095 weeks (with some days left over if you are counting leap years) ■