口算．21%+5%89÷48π38+34125×847×3813+1423-1234÷678÷64710×5147π23+5623×5613÷2667-31467%-24%99×5910×5623×91067÷65100÷2516×34710×52158×41534÷67667+3447÷9141112÷111412-数学
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