(1234567+2345671+3456712+4567123+5671234+6712345+7123456)/ 28简便运算

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(1234567+2345671+3456712+4567123+5671234+6712345+7123456)/ 28简便运算
(1234567+2345671+3456712+4567123+5671234+6712345+7123456)/ 28
简便运算

(1234567+2345671+3456712+4567123+5671234+6712345+7123456)/ 28简便运算
分别考虑单个位数上相加之和为28,然后再分别单个位数除以28,就是结果1111111

1111111

1111111

拆开分部
1000000+2000000+3000000+4000000+5000000+6000000+7000000=28000000
200000+300000+400000+500000+600000+700000+100000=2800000
30000+40000+50000+60000+70000+10000+20000=280000
以此类推
每个单位除以28
结果是1111111

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