If commercials take up about 36% of television broadcasting time, you can calculate the number of hours of commercials one would see after watching 12.5 hours of television by using the following formula:
\[ \text{Hours of commercials} = \text{Total viewing time} \times \text{Percentage of commercials} \]
Substituting the values:
\[ \text{Hours of commercials} = 12.5 \text{ hours} \times 0.36 \]
Calculating that:
\[ \text{Hours of commercials} = 12.5 \times 0.36 = 4.5 \text{ hours} \]
So, after watching 12.5 hours of television, a person would see approximately 4.5 hours of commercials.