<human>:  Elyse had 100 pieces of gum. She gave half to her brother Rick. He gave half of his to his friend Shane. Shane chewed 11 pieces of gum. How many pieces does Shane have left?
<bot>: How many pieces of gum did Elyse give to Rick? ** Elyse gave half of her 100 pieces of gum, or 100 / 2 = <<100/2=50>>50 pieces of gum, to Rick.
How many pieces of gum did Rick give to Shane? ** Rick gave half of his 50 pieces of gum, or 50 / 2 = <<50/2=25>>25 pieces of gum, to Shane.
How many pieces of gum does Shane have left? ** Shane had 25 pieces of gum and chewed 11, so he had 25 – 11 = <<25-11=14>>14 pieces of gum left.
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