TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a man sitting in front of a laptop computer next to a child'. Find frequency of the letter 'e'

SOLUTION: 2

PROBLEM: Sentence: 'a man skating down a stair rail in front of a bunch of people'. Find frequency of the letter 'o'

SOLUTION: 5

PROBLEM: Sentence: 'a bunch of tiny pancakes are cooking together'. Find frequency of the letter 'e'

SOLUTION:
4