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

[Q]: Sentence: 'a variety of a different type of vegetables'. Find frequency of the letter 't'
[A]: 4


[Q]: Sentence: 'a small dog sits in the rear window of a car'. Find frequency of the letter 'm'
[A]: 1


[Q]: Sentence: 'a street side with various flowers, bicycles and awnings'. Find frequency of the letter 'i'
[A]:
5