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

[EX Q]: Sentence: 'the counter of a doctor's office, including a laptop, cotton swabs, and tongue depressors'. Find frequency of the letter 'g'
[EX A]: 2

[EX Q]: Sentence: 'the ingredients are ready on the wooden table'. Find frequency of the letter 'w'
[EX A]: 1

[EX Q]: Sentence: 'a little girl sitting down eating a hot dog in a bun'. Find frequency of the letter 'h'
[EX A]:
1