trimm up the decimal places in output

Shell Programming and Scripting
1

I have a perl script that reports the avg time of a application call and the total number of calls. This works fine, however I would like to trim the number of decimal places reported from 12 to like 3 and I don't know how.
Any suggestions? Here is what I use to get the avg time...

for $eRef ( @operationInfoArray ) {
        $avgTime = $eRef->{TIME}/$eRef->{COUNT};
        print "$eRef->{NAME} :           $avgTime :      $eRef->{COUNT}\n";

Result...........
GET_HIST : 193.529040881471 : 113719
OPEN_BATCH : 142.549565217391 : 575
CLOSE_BATCH : 164.506297229219 : 397

Thanks

2 
$something = 123.123456789
$something = sprintf("%.3f", $something);

now something = 123.123

3

What actually your script will do? Is it calculate the average time taken for the execution of the script and number of times the script is called?

If so, i like to discuss regarding the script, find intresting and expecting one like that!