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

Q: Sentence: 'two laptop computers sitting on top of a white table'. Find frequency of the letter 'f'

A: 1
****
Q: Sentence: 'a dog has found a rather large stick for playing fetch'. Find frequency of the letter 't'

A: 3
****
Q: Sentence: 'a panoramic view of a woman sitting on a sofa watching television'. Find frequency of the letter 'i'

A:
7
****