Calculate BMI

Calculate BMI

Hello,

Could you please help me with the following calculation:

Height registration is in feet & inches.
Weight registration is in pounds & LBS.

I want to calculate the BMI for example:

//Calculate pounds
dec = row.Today_s_Weight_st_lbs.toDecimal() * 100;
num = row.Today_s_Weight_st_lbs.toLong() * 14;
pounds = (dec +  num);

//Calculate inches
dec1 = X.Height_ft_ins.toDecimal() * 100;
num1 = X.Height_ft_ins.toLong() * 12;
inches = (num1 + dec1);

//BMI Calculation
row.BMI = (pounds  *  0.45)  /  ((inches  *  0.025)  *  (inches  *  0.025)).round(0).toLong();

The problem is it doesn't work. Can anyone help me?