can someone please solve ghis through financial calculator and explain

Question Souran's financial institution has confirmed that based on her TDSR of 40% and GOSR of 30%, the maximum monthly mortgage payment she qualifies for is $2442. The qualitying interest rate for mortgages is 5% semi-annual and assume a 25 year amortization. Based on this, what is the largest mortgoge she would be able to qualify for input your answer to the nearest dollar with no minus or sign Answer: 705716.68 The correct answer is AUTO Expert answer VVVChan PLEASE THUMBS UP, IT IS VERY MOTIVATING :) IF ANY ISSUE IN ANSWER, WE CAN DISCUSS AND RESOLVE IN COMMENTS. Solution Loan Formula PV(rate period.-housing repayment) monthly rate (1+Semi-annual rate)^(1/6) -1 (1+5%/2)^(1/6) -1 0.412392% Maximum Loan Formula $ 419,872 =PV(0.412392%,25*12.-2442)