Calculation Problem

I am having trouble putting a 0 at the end of a price, can anyone help 

It works fine with the other items but when i click on a item which has a 0 on the end it only shows this "£1.9" 

In the "Advanced Options" in your calculation field, there is an option to set the number of decimal places for numerical values and to show empty decimal places, so please checked the check box of "Show decimal places."

If you have any query, or need further assistance, feel free to revert back.

Thanks.