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

Sentence: 'this is a close up view of a tennis player during the game'. Find frequency of the letter 't'
3

Sentence: 'a kitchen with hanging lights, an island with sink and bar stools, a refrigerator, small pantry door, wooden cabinets and shiny wood floor'. Find frequency of the letter 'n'
12

Sentence: 'a plate of food sitting on a table with forks and juice'. Find frequency of the letter 'c'
1