TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'the bathroom is in need of remodel'. Find frequency of the letter 'e'

SOLUTION: 5

PROBLEM: Sentence: 'a surfer is in the middle of an ocean wave'. Find frequency of the letter 'i'

SOLUTION: 3

PROBLEM: Sentence: 'a man nurse with gloves on is helping a woman'. Find frequency of the letter 'w'

SOLUTION:
2