Bug Fix,
Fixed the bug where if a person would subtract 1.11 and 1.10 instead of getting .01, it used to give .10. It is now giving the correct value .01
Fixed, several calculation errors, ie when adding 3.1 to 13.9 instead of getting 17, it was returning 23.298, now it is giving the correct answer. In the code changed all floats to doubles. Also improved decimal point routine.
Corrected error when adding to the current calculated sum. Removed trailing 0 right of the decimal point if there isn't any decimal precision.
Version 1.1 corrected several divide errors