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

[EX Q]: Sentence: 'a person standing operating a cell phone in a room'. Find frequency of the letter 'n'
[EX A]: 6

[EX Q]: Sentence: 'a couple of items that are on the wall'. Find frequency of the letter 'm'
[EX A]: 1

[EX Q]: Sentence: 'a old white fridge in a storage shed'. Find frequency of the letter 'e'
[EX A]:
4