online_amortization_1 calculator:   Monthly payments r' = (0.01 r)/12 A = P r'(1 + r')n/[(1 + r')n - 1] P = Initial loan amount (USD) r = Interest rate, annual (%) n = Total number of monthly payments A = Monthly payment (USD) INPUT: Initial loan amount P (USD) :     Interest rate r, annual (%):     Total number of monthly payments n :     OUTPUT:  Monthly payment A :   Fatal error: Uncaught Error: Call to undefined function money_format() in /var/www/html/ponce/onlineamortization1.php:188 Stack trace: #0 {main} thrown in /var/www/html/ponce/onlineamortization1.php on line 188