In a playground, there are two seesaws. Each seesaw has two seats. On the first seesaw, the angles formed by the seats with the horizontal ground are complementary. If one seat forms an angle of 35° with the ground, what is the angle formed by the other seat? Additionally, if the number of children on the second seesaw is a multiple of 4, and there are exactly 8 children, how many children are there in total on the playground? Let's think step by step and output the final answer within \boxed{}.
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