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: 'a herd of giraffes in tall african grass'. Find frequency of the letter 'a'

A: 6
****
Q: Sentence: 'a laptop computer in front of a window with indoor plants'. Find frequency of the letter 'o'

A:
7
****