Cindy has 37 envelopes. If Cindy gives 3 envelopes to each of her 5 friends, how many envelopes does she have left? Let's think first. Chain of thought:
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Cindy gave 3 envelopes / friend x 5 friends = 15 envelopes to her friends. Cindy has 37 envelopes - 15 envelopes = 22 envelopes left.
Therefore, the answer is 22.
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