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

[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: 'a group of cars and house on truck passing in a street'. Find frequency of the letter 'i'
[EX A]: 2

[EX Q]: Sentence: 'there is a woman pointing at something with her dog'. Find frequency of the letter 'i'
[EX A]:
5