600:58

Do you mean 600:58 as a ratio, a division, or a time interval? Here are the likely interpretations:

• Ratio (and also the division 600 ÷ 58): simplify by gcd(600,58)=2 → 300:29. As a decimal, 600/58 = 300/29 ≈ 10.3448.
• Time interval (600 hours and 58 minutes): that's 25 days and 58 minutes, i.e., 600.9667 hours total.

Which form do you want? fraction, decimal, or something else?