I need the algorithm and the program

One way to determine how healthy a person is by measuring the body fat of the person. The formulas to determine the body fat for female and male are as follows: 19. Body fat formula for women: A1 = (body weight 0.732) + 8.987 A2 = wrist measurement (at fullest point) / 3.140 A3 waist measurement (at navel) 0.157 A4 = hip measurement (at fullest point) 0.249 A5 = forearm measurement (at fullest point) 0.434 B A1 + A2- A3- A4 + A5 Body fat-body weight-B Body fat percentage body fat x 100/ body weight