In this task, you need to count the number of times the given letter appears in the given sentence.

Q: Sentence: 'a doorway looking into a small bathroom with white toilet'. Find frequency of the letter 'r'

A: 2
****
Q: Sentence: 'a man in a black shirt prepares to catch a frisbee'. Find frequency of the letter 'f'

A: 1
****
Q: Sentence: 'a bowl of food with a bunch of vegetables in it'. Find frequency of the letter 'o'

A:
5
****