Your question begs the question, "Hours of what?" The disc can hold 4.7 GB of data. What the data is, and its Format will determine the number of playback hours that it represents. It is possible to record one movie on the disc and have it be full, or record multiple movies on the same capacity disc. This is because the software creating the disc can use compression when writing. Likewise, you could write only audio files in MP3 format to the disc and have many hours and hours of content.
In the highest quality format, a DVD will hold only one hour of video/audio content. At a lower quality, equivalent to a VHS tape, the same DVD can hold about 9 hours of video/audio content. So, the answer to your question is, between 1 and 9 hours of video/audio content, in a decent quality.
1.25 hours plus 1.25 hours plus 2.25 hours = 4.75 hours or 4 hours and 45 minutes
8 hours plus 24 hours
about 22 hours plus stops
*Edit* M2 can print a box of paper in 3x plus 20 hours.
32 hours, plus stops.
36 hours because there are 24 hours in 1 day and plus 12 hours equals 36 hours
3514 hours is equal to 146 days plus an additional 10 hours.
10 Hours plus stop
4.1666666667 days or 4 complete days plus 4 hours
There are two full hours plus 10 minutes in 130 minutes
GMT plus 4
That would amount to 26 hours.24 hours in a day plus 2 hours equals 26 hours.