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

Q: Sentence: 'a flock of sheep grazing in a park'. Find frequency of the letter 'f'

A: 2
****
Q: Sentence: 'hotel towels with sunglasses perched and hotel business cards and catalog'. Find frequency of the letter 'o'

A: 4
****
Q: Sentence: 'there is a baby that has a tshirt with a tie'. Find frequency of the letter 't'

A:
7
****