David plans to buy supplies for his art project. He needs 5 packs of colored pencils costing $3 each, 8 sketchbooks costing $4 each, and 2 sets of paintbrushes costing $7 each. Additionally, he wants to buy an art kit that costs $25. If David has saved $60, how much more money does he need to buy everything? Let's think step by step and output the final answer within \boxed{}.
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