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28×5+2×4×35+21×20+14×40+8×62=.

题目详情
28×5+2×4×35+21×20+14×40+8×62=______.
▼优质解答
答案和解析
28×5+2×4×35+21×20+14×40+8×62
=14×2×5+2×4×7×5+3×7×2×10+14×40+8×62
=14×2×5+14×4×5+3×14×10+14×40+8×62
=14×(2×5+4×5+3×10+40)+8×62
=14×100+496
=1400+496
=1896
故答案为:1896.