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The amount of heat given is the heat generated by your body (which is the system). The question is asking for the entropy of the surroundings. Therefore, when plugging in the heat of the surroundings, remember q system = - q surroundings. The heat of a system is equal and opposite to the heat of its surroundings.
The heat of the system is equal and opposite to the heat of the surroundings. qsystem = -qsurroundings. The heat given off by the system is the same amount of heat that is absorbed by the surroundings because the heat of the universe has to stay constant.
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