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

Q: Sentence: 'a cat sleeping near lots of pairs of shoes'. Find frequency of the letter 'r'

A: 2
****
Q: Sentence: 'a man in a suit makes the first slice into a cake'. Find frequency of the letter 't'

A: 4
****
Q: Sentence: 'a blanket on the sand with two pizzas, vegetables and dip, and other foods on it'. Find frequency of the letter 'a'

A:
7
****