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

Q: Sentence: 'a piece of bread stuffed with meat and vegetables'. Find frequency of the letter 's'

A: 2
****
Q: Sentence: 'a man sitting on a motorcycle near two other men'. Find frequency of the letter 'r'

A: 3
****
Q: Sentence: 'a room full of people sitting down on chairs'. Find frequency of the letter 'd'

A:
1
****