ile to sekund 2 godz 3min 20sek

2×(60×60)+20=2×1200+20=2400+20=2420s

2 • 60 min + 3 min = 123 min 123 • 60 s = 7 380 s 7 380 s + 20 s = 7 400 s 2 godz 3 min 20 s = 7 400 s