1h = 60 min
60 m = 3600 sec
6 h = 360 minute .
0,42h = 42 minute => 6,42h = 402 minute .
3h = 180 min
180+56 = 236 min 54 sec => 402 min - 236 min 54 sec = 165 minute si 6 sec = 2h 45 min si 6 sec . Sper ca e bine , verifica daca nu cumva m-am incurcat la calcule .
