TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a bus with two floors belonging to london country'. Find frequency of the letter 't'

SOLUTION: 4

PROBLEM: Sentence: 'a gray airplane with metal petals on the wings takes off from an airport'. Find frequency of the letter 'i'

SOLUTION: 4

PROBLEM: Sentence: 'a person jumping up to catch a frisbee'. Find frequency of the letter 'a'

SOLUTION:
3

