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

Input: Consider Input: Sentence: 'the meal is served and ready to be eaten'. Find frequency of the letter 'e'

Output: 8


Input: Consider Input: Sentence: 'tow birds flying by a long necked crane'. Find frequency of the letter 'f'

Output: 1


Input: Consider Input: Sentence: 'small birds on tree branches with a sky background'. Find frequency of the letter 'h'


Output: 2