I am working on a dollars to euros/euros to dollars converter in C#. I got the formula, $ times 0.73361 = euro, and I have checked Google with the answers. They were right, (1 dollar equals 0.73 euros). However, it stops working properly when the dollar input value is higher than $1363. This is what I get with $1364: $1364 = 1 000,64 €. I don't know what to do, will someone please help me?

Thanks.

 decimal toEuro;
 Val.doy = "$" + decimal.Parse(richTextBox1.Text); //Ignore this, it's for the output form
 CultureInfo eu = new CultureInfo("fr-FR");
 toEuro = decimal.Parse(richTextBox1.Text.Trim());
 toEuro = toEuro * 0.73361m;
 richTextBox1.Clear();
 Val.duh = toEuro.ToString("C2", eu);