There is a square playground that has a side length of 12 meters. There is a maintenance building on the playground that measures 8 meters by 5 meters. How many square meters of the playground is not covered by the maintenance building? Let's think first. Chain of thought:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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12 * 12 = 144 square meters. 8 * 5 = 40 square meters. 144 - 40 = 104 square meters. 104 square meters of the playground are not covered by the maintenance building.
Therefore, the answer is 104.