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

Q: Sentence: 'a toilet sits in a cluttered bathroom next to a sink'. Find frequency of the letter 'a'

A: 4
****
Q: Sentence: 'the meal is served and ready to be eaten'. Find frequency of the letter 'e'

A: 8
****
Q: Sentence: 'a motorcycle parked at a store parking lot'. Find frequency of the letter 'n'

A:
1
****