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

Q: Sentence: 'two boys are doing skateboard jumps in the street'. Find frequency of the letter 's'

A: 4
****
Q: Sentence: 'this marketplace has a lot of fresh fruit and vegetables'. Find frequency of the letter 'v'

A: 1
****
Q: Sentence: 'a baseball player standing on top of a baseball field'. Find frequency of the letter 'a'

A:
8
****