How can I keep the double values as it is e.g. 5.00 instead of 5 and 5.50 instead of 5.5.

Thank you for your response Marsha, good point. I have created all variable as String. I thought I found the solution for it using aqConvert.StrToFloat() method or by using float() method, but whenever multiplying two values, output comes remove the last zero. e.g. 25*0.18 = 4.5 instead of 4.50