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

Q: Sentence: 'four women around a man sitting in front of a cake'. Find frequency of the letter 'o'

A: 5
****
Q: Sentence: 'an old glass vase containing flowers on a glass table'. Find frequency of the letter 'b'

A: 1
****
Q: Sentence: 'a male surfer surfing through the spray in the ocean'. Find frequency of the letter 's'

A:
3
****