Answer
Total R films = 44
Ratio of PG-13 films to total films: $\frac{23}{103}$
Work Step by Step
Total films = 22+23+44+0+14 = 103 films
Total R films = 44 films
Total PG-13 films = 23 films
23 films to 103 films --> $\frac{23\text{ films}}{103\text{ films}} = \frac{23}{103}$