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

[EX Q]: Sentence: 'a young woman dressed in green and black operating a remote control'. Find frequency of the letter 'r'
[EX A]: 5

[EX Q]: Sentence: 'a castle like bed room that has the era of templar knight similarities'. Find frequency of the letter 'm'
[EX A]: 3

[EX Q]: Sentence: 'a skateboarder is going downhill in full padding'. Find frequency of the letter 'n'
[EX A]:
4