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

[Q]: Sentence: 'party cakes in plastic containers, with a cake with a plastic santa claus and reindeer on top'. Find frequency of the letter 's'
[A]: 6


[Q]: Sentence: 'a desk covered in notepads, a laptop and other devices'. Find frequency of the letter 'c'
[A]: 2


[Q]: Sentence: 'a collage of photos of cats and goats'. Find frequency of the letter 't'
[A]:
3