TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a person trying to flip a skateboard in a garage'. Find frequency of the letter 'a'

SOLUTION: 7

PROBLEM: Sentence: 'a plate of food, with broccoli and nuts'. Find frequency of the letter 'b'

SOLUTION: 1

PROBLEM: Sentence: 'a man rides a wave on his surfboard in a wetsuit'. Find frequency of the letter 'o'

SOLUTION:
2