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

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

A: 5
****
Q: Sentence: 'a tower with some bright lights and clocks on it'. Find frequency of the letter 'h'

A: 3
****
Q: Sentence: 'a orange and white striped cat laying on fabric in a clothing store'. Find frequency of the letter 'r'

A:
4
****