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

Q: Sentence: 'a teenager witting on a futon couch holding gaming controls in both hands'. Find frequency of the letter 'c'

A: 3
****
Q: Sentence: 'a snowboarder making a jump of a snowy ledge'. Find frequency of the letter 'o'

A: 4
****
Q: Sentence: 'a laptop on a stool outside the field'. Find frequency of the letter 'f'

A:
1
****