TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'two laptop computers sitting on top of a white table'. Find frequency of the letter 'f'

SOLUTION: 1

PROBLEM: Sentence: 'the street sign is next to a curved road'. Find frequency of the letter 's'

SOLUTION: 3

PROBLEM: Sentence: 'a kitchen with a refrigerator with magnets and a hutch with china, books and children's toys around'. Find frequency of the letter 't'

SOLUTION:
8