In this task, you need to count the number of times the given letter appears in the given sentence.
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Question: Sentence: 'cars parked outside if a retail store'. Find frequency of the letter 'd'

Answer: 2


Question: Sentence: 'a little boy that has a toothbrush in his mouth'. Find frequency of the letter 'r'

Answer: 1


Question: Sentence: 'a table is laden with supplies such as peppers, brown and white eggs, tomatoes, milk, corn and grapes'. Find frequency of the letter 'r'

Answer:
4