How long is 15000 seconds?
Understand the Problem
The question is asking for the conversion of 15000 seconds into a more comprehensible time format, such as hours, minutes, and seconds.
Answer
$4$ hours, $10$ minutes, $0$ seconds.
Answer for screen readers
The final answer is: $4$ hours, $10$ minutes, $0$ seconds.
Steps to Solve

Identify Time Units
We know that 1 hour is equal to 3600 seconds and 1 minute is equal to 60 seconds. 
Convert seconds to hours
First, we will divide the total seconds by the number of seconds in an hour. $$ \text{Hours} = \frac{15000 \text{ seconds}}{3600 \text{ seconds/hour}} \approx 4.1667 $$
Since we need whole hours, we take the integer part, which is 4 hours. 
Calculate remaining seconds
Next, we find out how many seconds remain after converting to hours: $$ \text{Remaining seconds} = 15000  (4 \times 3600) = 15000  14400 = 600 \text{ seconds} $$ 
Convert remaining seconds to minutes
Now, we convert the remaining seconds into minutes: $$ \text{Minutes} = \frac{600 \text{ seconds}}{60 \text{ seconds/minute}} = 10 \text{ minutes} $$ 
Determine remaining seconds
Since there are no remaining seconds after converting to minutes, we find that: $$ \text{Remaining seconds} = 600  (10 \times 60) = 600  600 = 0 \text{ seconds} $$ 
Final time format
Combine hours, minutes, and seconds to present the final time format: $$ 15000 \text{ seconds} = 4 \text{ hours}, 10 \text{ minutes}, 0 \text{ seconds} $$
The final answer is: $4$ hours, $10$ minutes, $0$ seconds.
More Information
Converting seconds into hours, minutes, and seconds is useful for better understanding time intervals. There are 3600 seconds in an hour and 60 seconds in a minute, which helps facilitate these conversions.
Tips
 Not considering integer values: When dividing to find hours, some might mistakenly think they can take the decimal. It's important to use the integer part for hours and proceed with remaining seconds.
 Miscalculating remaining seconds: Ensure that after calculating the total time in hours, you always subtract the correct number of seconds used for those hours from the original total.