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

[EX Q]: Sentence: 'a person trying to flip a skateboard in a garage'. Find frequency of the letter 'a'
[EX A]: 7

[EX Q]: Sentence: 'a surfer is in the middle of an ocean wave'. Find frequency of the letter 'i'
[EX A]: 3

[EX Q]: Sentence: 'two pizzas on a wooden table next to wine'. Find frequency of the letter 't'
[EX A]:
4