Question about this mortgage math problem

[Arty Fresh]

A borrower who is paid $14.50 per hour and works 30 hours per week, received __ per month?

A. $2320

B. $1885

C. $1740

D. $2500

So according to the instructor, the answer is B and the math they did to get $1885 is 14.50 x 30 x 52 / 12 = 1885

But the answer I got was $1740. I did 14.5 x 30 x 4 and it gave me 1740. So how am I wrong?

And where did that 52 come from ?