I am manipulation numeric data that is normally to three decimal places (it is consistently never more). However, if the last digit is a '0', the source does not output the last 'zero'.
So for example I would have
1.127
1.128
1.129
1.13 <<<<
1.131

I assume that I can use the 'character count' filter' to identify any numbers with 'two decimal point digits' (the numbers of characters before the decimal place is consistently a single digit.)
But how do I append a '0' to the end of any number that has just two decimal places?