TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a large bathroom with marble floor, counter, and bath'. Find frequency of the letter 'f'

SOLUTION: 1

PROBLEM: Sentence: 'a green bus driving in a street filled with heavy traffic'. Find frequency of the letter 'v'

SOLUTION: 2

PROBLEM: Sentence: 'a white toilet sitting next to a side loading washer'. Find frequency of the letter 'd'

SOLUTION:
2