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

Q: Sentence: 'a man in his car eating a donut'. Find frequency of the letter 'm'

A: 1
****
Q: Sentence: 'a man hitting a tennis ball with a tennis racquet'. Find frequency of the letter 't'

A: 6
****
Q: Sentence: 'there is a man sitting at a table eating alone'. Find frequency of the letter 'l'

A:
2
****