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

Q: Sentence: 'some cubbies with towels in a blue bathroom'. Find frequency of the letter 'l'

A: 2
****
Q: Sentence: 'a few giraffes standing in a field looking around'. Find frequency of the letter 'e'

A: 3
****
Q: Sentence: 'a red fire hydrant next to a bare tree'. Find frequency of the letter 'b'

A:
1
****