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

Input: Consider Input: Sentence: 'the ingredients are ready on the wooden table'. Find frequency of the letter 'w'

Output: 1


Input: Consider Input: Sentence: 'the sun goes down over a bike tied to a bench at the beach'. Find frequency of the letter 't'

Output: 5


Input: Consider Input: Sentence: 'a person on a skateboard going up a small ramp'. Find frequency of the letter 'l'


Output: 2