TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'one man grabbing another at a table while laughing'. Find frequency of the letter 'n'

SOLUTION: 5

PROBLEM: Sentence: 'party cakes in plastic containers, with a cake with a plastic santa claus and reindeer on top'. Find frequency of the letter 's'

SOLUTION: 6

PROBLEM: Sentence: 'a man and two kids standing by the water and flying a kite'. Find frequency of the letter 'a'

SOLUTION:
7