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

[Q]: Sentence: 'a glass bowl of raw broccoli, a ceramic bowl of raw green chili peppers, and steel bowl of raw daikon'. Find frequency of the letter 'a'
[A]: 9


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


[Q]: Sentence: 'a guy does jumps with his skateboard down the stair rails'. Find frequency of the letter 'h'
[A]:
3