TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'surfboard being displayed in stor window with clothes behind it'. Find frequency of the letter 't'

SOLUTION: 4

PROBLEM: Sentence: 'a sheep in a field in front of other sheep'. Find frequency of the letter 'f'

SOLUTION: 3

PROBLEM: Sentence: 'a city skyline in the dark with a building steeple with clocks on top'. Find frequency of the letter 'k'

SOLUTION:
3