2h 15 min 56s+3h 48 min 22s=

To solve this problem, you need to add the time values together in hours, minutes, and seconds separately.

First, add the hours: 2 hours + 3 hours = 5 hours.

Next, add the minutes: 15 minutes + 48 minutes = 63 minutes. Since 60 minutes make up 1 hour, you can convert 63 minutes to 1 hour and 3 minutes.

Then, add the remaining minutes to the hours: 5 hours + 1 hour = 6 hours, and add the remaining 3 minutes.

Lastly, add the seconds: 56 seconds + 22 seconds = 78 seconds. Since 60 seconds make up 1 minute, you can convert 78 seconds to 1 minute and 18 seconds.

Therefore, the total time is 6 hours, 3 minutes, and 18 seconds.

In Russian: 6 часов 3 минуты 18 секунд.