Bonjour
2,7525 h = 2 h + (0,7525 × 60) mn
= 2h 45,15 mn
= 2 h 45 mn + (0,15 × 60) s
= 2 h 45 mn 9 s
6 h 27 mn 18 s = 6×60 mn + 27 mn + (18/60) mn
= 360 mn + 27 mn + 0,3 mn
= 387,3 mn
6,455 h = (6,455 × 3 600) s = 23 238 s
165,15 mn = 2×60 mn + 45 mn + (0,15×60) s = 2 h 45 mn 9 s
165,15 mn = (165 × 60) s + (0,15×60) s = 9 909 s
