In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'a bedroom with a neatly made bed and a laptop'. Find frequency of the letter 'l'

Answer: 2


Question: Sentence: 'a young boy standing in front of a counter with dougnuts'. Find frequency of the letter 'o'

Answer: 6


Question: Sentence: 'a man with a beard and a small boy with his toy'. Find frequency of the letter 'r'

Answer:
1