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

Sentence: 'a plastic tray that has different foods inside of it'. Find frequency of the letter 't'
6

Sentence: 'a tennis player that is running to get the tennis ball'. Find frequency of the letter 't'
7

Sentence: 'purple flowers in bloom next to a fire hydrant'. Find frequency of the letter 'i'

2