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

[EX Q]: Sentence: 'a man in a black wet suit rides an orange surfboard on the water'. Find frequency of the letter 'o'
[EX A]: 3

[EX Q]: Sentence: 'two baseball players high five each other during a game'. Find frequency of the letter 'y'
[EX A]: 1

[EX Q]: Sentence: 'a stop sign on the side of the road'. Find frequency of the letter 't'
[EX A]:
3