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: 'a bird outside standing on a table looking up'. Find frequency of the letter 'b'

Output: 2


Input: Consider Input: Sentence: 'a picture of street signs and lamp carve out the building across the streets structural details '. Find frequency of the letter 'e'


Output: 9