In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'an old glass vase containing flowers on a glass table'. Find frequency of the letter 'b'

Answer: 1


Question: Sentence: 'a man in his car eating a donut'. Find frequency of the letter 'm'

Answer: 1


Question: Sentence: 'a snowboarder should get the lay of the land before hitting the slopes'. Find frequency of the letter 'e'

Answer:
8