TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'people fishing and enlarge mountainlake with trees lining the shoreline'. Find frequency of the letter 't'

SOLUTION: 4

PROBLEM: Sentence: 'two bigger elephants standing with a small elephant'. Find frequency of the letter 't'

SOLUTION: 5

PROBLEM: Sentence: 'broccoli and cauliflower covered with sweet and sour sauce'. Find frequency of the letter 'e'

SOLUTION:
6