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

[Q]: Sentence: 'two men in black wet suits beside a white surfboard'. Find frequency of the letter 'e'
[A]: 5


[Q]: Sentence: 'a car accident has slowed traffic as a clean up crew works'. Find frequency of the letter 'f'
[A]: 2


[Q]: Sentence: 'a beautiful woman riding a surfboard in a skimpy outfit'. Find frequency of the letter 's'
[A]:
2