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

Q: Sentence: 'cars parked outside if a retail store'. Find frequency of the letter 'd'

A: 2
****
Q: Sentence: 'a man hitting a tennis ball with a tennis racquet'. Find frequency of the letter 't'

A: 6
****
Q: Sentence: 'the cluttered desk has a video game remote, a keyboard, and glass cups'. Find frequency of the letter 'm'

A:
2
****