question: public static String timeToString ( long period ) { period /= 10 ; final long milsecs = period % 100 ; period /= 100 ; final long secs = period % 60 ; period /= 60 ; final long mins = period % 60 ; period /= 60 ; final long hours = period ; return String . format ( "%02d:%02d:%02d.%02d" , hours , mins , secs , milsecs ) ; }
target:  Converts millisecond count to HH:MM:SS.SS where the seconds are reported with 0.01 precision 