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

Input: Consider Input: Sentence: 'a plane with smoke coming from the tips of both wings'. Find frequency of the letter 'c'

Output: 1


Input: Consider Input: Sentence: 'a pizza pie sitting on a wooden table with tongs'. Find frequency of the letter 't'

Output: 5


Input: Consider Input: Sentence: 'a room with study table,desk with drawer and a couch with a laptop and other toys'. Find frequency of the letter 'n'


Output: 2