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

Input: Consider Input: Sentence: 'a bedroom with a neatly made bed and a laptop'. Find frequency of the letter 'l'

Output: 2


Input: Consider Input: Sentence: 'the snowboarder wearing a dark helmet sprays snow into the air'. Find frequency of the letter 'w'

Output: 3


Input: Consider Input: Sentence: 'a tennis player doing a practice swing in a tennis court stadium'. Find frequency of the letter 'g'


Output: 2