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

Q: Sentence: 'a small doughnut held in a persons hand'. Find frequency of the letter 'n'

A: 4
****
Q: Sentence: 'a guy riding a bike close to a car in the street'. Find frequency of the letter 'i'

A: 4
****
Q: Sentence: 'a plate topped with a back burger and broccoli'. Find frequency of the letter 'e'

A:
3
****