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

[Q]: Sentence: 'a display case filled with lots of different clocks'. Find frequency of the letter 'w'
[A]: 1


[Q]: Sentence: 'the skateboarder is jumping over a huge statue of a shoe'. Find frequency of the letter 'i'
[A]: 2


[Q]: Sentence: 'a kid with a toothbrush held up to his mouth'. Find frequency of the letter 't'
[A]:
5