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

Input: Consider Input: Sentence: 'a long row of tables displaying lots of fruit'. Find frequency of the letter 'o'

Output: 5


Input: Consider Input: Sentence: 'a young boy holding a piece of paper on top of a table'. Find frequency of the letter 'y'

Output: 2


Input: Consider Input: Sentence: 'a partly peeled banana and an insulated bag on a table'. Find frequency of the letter 'i'


Output: 1