Answer:
it depends: $197,591.00 if you count 52 weeks per year; $198,851.28 if you count 365.25 days per year and 7 days per week.
Explanation:
If we consider a year to be 52 weeks, then the total number of payments is ...
25×52 = 1300
The total amount paid is then ...
1300×$315.07 = $409,591.00
The difference between this and the loan amount is the interest paid:
$409,591 - 212000 = $197,591
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If you take into account the extra days in each year and the leap years, very likely there would be 4 more payments in 25 years. Then the total interest is ...
1304×$315.07 -212,000.00 = $198,851.28