TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'man in a radio studio wearing a suit in front of a microphone'. Find frequency of the letter 't'

SOLUTION: 3

PROBLEM: Sentence: 'several zebras  and a giraffe in an enclosure'. Find frequency of the letter 's'

SOLUTION: 3

PROBLEM: Sentence: 'a woman riding a bike up a very steep hill'. Find frequency of the letter 't'

SOLUTION:
1