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

Q: Sentence: 'a closet with a fan, luggage and various boxes'. Find frequency of the letter 'a'

A: 6
****
Q: Sentence: 'a large bathroom with marble floor, counter, and bath'. Find frequency of the letter 'f'

A: 1
****
Q: Sentence: 'a photo of big ben early in the morning'. Find frequency of the letter 'e'

A:
3
****