In this task, you need to count the number of times the given letter appears in the given sentence.

Input: Consider Input: Sentence: 'one woman holding a video game controller and standing next to another woman'. Find frequency of the letter 't'

Output: 5

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

Output: 3

Input: Consider Input: Sentence: 'children with scissors and construction paper in a school classroom'. Find frequency of the letter 'c'
Output: 6