I am a bit disappointed, this error is a tax problem. I want to provide an online service to my customers but I can not give them an incorrect price.
Here's the problem:
I have 2 taxes (GST & PST in Canada). Everything works fine except for the case the application appears to suppress a 0 in decimal.
Example:

Base $ 580
Extra: $ 40
Total: $ 620
GST 5% : $ 31
PST 10% (+ GST on Total): $ 65.09 (instead of 65.1, I don't know why)
Total displayed : $ 716.90 CAD (instead of $ 716.09 or $ 716.1!) The decimal 0 to $ 716.09 has disappeared
The complete quote displayed on my website is wrong and when the customer pays this amount: $ 716.9, I have always an error with my balance: $ 0.81 - This error is automatic when I have the second tax with 2 decimal and the first decimal is 0.
After dozens of bills, it's a real problem.
Who could give me a solution or partial solution?
Thank you,
Olivier