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

Q: Sentence: 'a laptop computer with pictures of giraffes on the homescreen'. Find frequency of the letter 'o'

A: 5
****
Q: Sentence: 'an empty clean kitchen with island, marble countertops , stove and cabinetry'. Find frequency of the letter 'l'

A: 3
****
Q: Sentence: 'a dog looking with great anticipation at a yellow frisbee'. Find frequency of the letter 'o'

A:
5
****