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

Q: Sentence: 'a black computer with a screen reading "press any key to begin."'. Find frequency of the letter 'a'

A: 5
****
Q: Sentence: 'a woman sitting in front of a giant slice of cheese pizza'. Find frequency of the letter 'e'

A: 4
****
Q: Sentence: 'a man who is playing a video game'. Find frequency of the letter 's'

A:
1
****