TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a mixed bouquet of flowers in a glass vase set before a window'. Find frequency of the letter 'w'

SOLUTION: 3

PROBLEM: Sentence: 'there is a sandwich with a lot of meat cut in half'. Find frequency of the letter 'a'

SOLUTION: 5

PROBLEM: Sentence: 'an illuminated toilet with a bright light on it's lid'. Find frequency of the letter 'i'

SOLUTION:
8