TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a bedroom with a neatly made bed and a laptop'. Find frequency of the letter 'l'

SOLUTION: 2

PROBLEM: Sentence: 'a large grass pasture land with sheep grazing on grass'. Find frequency of the letter 'a'

SOLUTION: 7

PROBLEM: Sentence: 'a desk with two computers is cluttered'. Find frequency of the letter 'w'

SOLUTION:
2