Converting an angle in DMS form to decimal form

The video tutorial explains how to convert degrees into decimal form. It starts by introducing the concept of degrees and minutes, explaining that there are 60 minutes in a degree. The tutorial then demonstrates how to calculate partial degrees using a fraction of minutes, specifically 12 out of 60, and how to reduce this fraction to find the decimal equivalent. Finally, it shows the conversion of 23 degrees and 1/5 degree into a decimal, resulting in 23.20 degrees.

Explain how to convert 12 minutes into a fraction of a degree.

What does the teacher mean by saying 'it's a portion of a degree'?