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

[Q]: Sentence: 'people seated on a table looking very happy'. Find frequency of the letter 'g'
[A]: 1


[Q]: Sentence: 'old double decker bus parked in a lot'. Find frequency of the letter 't'
[A]: 1


[Q]: Sentence: 'a woman skiing on the snowy slopes'. Find frequency of the letter 'e'
[A]:
2