For example:
14.98812 -> 14.988
1.8731312 -> 1.873
2.33045 -> 2.33
script in perl:
$price =~ s/(\.\d\d[1-9]?)\d*/$1/
Explain:
\.matches the point
\d\dmatches the first two digits
[1-9]?matches the third digit if it's between 1 to 9
match all above as a group, in perl, can use $1 to identical the group first
\d*to match all the rest digits if exists.
at last, replace the matched string(e.g. 1.231323131) and replace with the first matched group(the 3 useful digits if the third one is not 0).
