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

Q: Sentence: 'a closet with a fan, luggage and various boxes'. Find frequency of the letter 'a'

A: 6
****
Q: Sentence: 'two baseball players high five each other during a game'. Find frequency of the letter 'y'

A: 1
****
Q: Sentence: 'a stainless steel refrigerator and a hallway leading to another room'. Find frequency of the letter 'y'

A:
1
****