TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a white toilet sitting next to a bathroom sink'. Find frequency of the letter 'b'

SOLUTION: 1

PROBLEM: Sentence: 'a girl laying on a bed posing for a picture'. Find frequency of the letter 'i'

SOLUTION: 4

PROBLEM: Sentence: 'a meat, vegetables and rice dish in a bowl'. Find frequency of the letter 't'

SOLUTION:
2