TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'two men are playing a video game as another sits watching'. Find frequency of the letter 'a'

SOLUTION: 7

PROBLEM: Sentence: 'three young people goofing around; one of the guys has a football, the girl has a teddy bear'. Find frequency of the letter 'd'

SOLUTION: 3

PROBLEM: Sentence: 'an office table holding a monitor and keyboard in a room'. Find frequency of the letter 'a'

SOLUTION:
6

