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

Q: Sentence: 'a boy catching a frisbee while standing ins bunch of leaves'. Find frequency of the letter 'a'

A: 5
****
Q: Sentence: 'man is snow gear and skis skiing in the snow'. Find frequency of the letter 'i'

A: 5
****
Q: Sentence: 'a bus that reads "851" is parked at the side of the road'. Find frequency of the letter 'i'

A:
2
****