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

Input: Consider Input: Sentence: 'a glass vase sits between two statues'. Find frequency of the letter 'o'

Output: 1


Input: Consider Input: Sentence: 'a person holding onto a pink kite at the beach'. Find frequency of the letter 'n'

Output: 4


Input: Consider Input: Sentence: 'this photo shows a kitchen with microwave, stove and island'. Find frequency of the letter 'i'


Output: 5