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

[Q]: Sentence: 'a man sitting in front of a laptop computer next to a child'. Find frequency of the letter 'e'
[A]: 2


[Q]: Sentence: 'a knife a cutting board some bananas and a toaster'. Find frequency of the letter 'i'
[A]: 2


[Q]: Sentence: 'a bowl of soup that is on a plate'. Find frequency of the letter 't'
[A]:
3