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

Sentence: 'a bedroom with a neatly made bed and a laptop'. Find frequency of the letter 'l'
2

Sentence: 'a man is taking a picture of a man and woman'. Find frequency of the letter 'a'
8

Sentence: 'a bunch of boats are out on the water'. Find frequency of the letter 'n'

2