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

[EX Q]: Sentence: 'a bunch of fruit sitting in a bowl, its overflowing'. Find frequency of the letter 't'
[EX A]: 4

[EX Q]: Sentence: 'a child sitting a table with a pizza in front of him'. Find frequency of the letter 'h'
[EX A]: 3

[EX Q]: Sentence: 'two homemade chocolate donuts with green and orange candy sprinkles'. Find frequency of the letter 'e'
[EX A]:
7