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

Input: Consider Input: Sentence: 'a display case filled with lots of different clocks'. Find frequency of the letter 'w'

Output: 1


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 man with a green bandana holding onto a kite string'. Find frequency of the letter 'w'


Output: 1