99.99*33/100=32.99
then i need to add 33+99.99=132 i need answer but it shows 101
double s, su = 0;
s = (double.Parse(TextBox17.Text) + Convert.ToInt32(TextBox13.Text)) / 100;
//float.Parse(TextBox13.Text)) / 100;
su = float.Parse(TextBox17.Text) + s;
TextBox21.Text = Convert.ToString(su);