~13.6895 years

To convert hours into years, you divide the number of hours by the number of hours in a year.

Let's break it down step by step:

1. Understanding the conversion factors:

• 1 day = 24 hours
• 1 year = 365 days
• Average hours per year:

$$365 \times 24 = 8,760$ hours

2. Dividing 120,000 hours by the number of hours in a year:

$$120,000 \div 8,760 \approx 13.6986$$

This means 120,000 hours is approximately 13.7 years.

3. Considering leap years:

• A leap year has 366 days, meaning it has 8,784 hours instead of 8,760.
• The actual average length of a year, considering leap years, is 365.2425 days.
• Average hours per year:

$$365.2425 \times 24 = 8,766 \text{ hours}$$

• Using this more precise value:

$$120,000 \div 8,766 \approx 13.6895 \text{ years}$$

So, whether using the standard 365-day year (13.7 years) or the more precise average year length (13.69 years), the result is nearly the same.