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

[Q]: Sentence: 'a black animal in dirt area below trees and rocks'. Find frequency of the letter 'n'
[A]: 3


[Q]: Sentence: 'some food on plates next to each other on a table'. Find frequency of the letter 'e'
[A]: 6


[Q]: Sentence: 'a man on a red motorcycle performing a stunt'. Find frequency of the letter 'r'
[A]:
4