TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'statues of 2 zebras and 1 giraffe in a doorway'. Find frequency of the letter 'a'

SOLUTION: 6

PROBLEM: Sentence: 'three people are gathered around sitting on a park bench'. Find frequency of the letter 'g'

SOLUTION: 2

PROBLEM: Sentence: 'a man happily cutting a piece of cake'. Find frequency of the letter 'c'

SOLUTION:
3