简便运算(123.456+234.561+345.612+456.123+561.234+612.345)÷7拜托各位了 3Q

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简便运算(123.456+234.561+345.612+456.123+561.234+612.345)÷7拜托各位了3Q简便运算(123.456+234.561+345.612+456.123+5

简便运算(123.456+234.561+345.612+456.123+561.234+612.345)÷7拜托各位了 3Q
简便运算(123.456+234.561+345.612+456.123+561.234+612.345)÷7拜托各位了 3Q

简便运算(123.456+234.561+345.612+456.123+561.234+612.345)÷7拜托各位了 3Q
(123.456+234.561+345.612+456.123+561.234+612.345)÷7 =[(1+2+3+4+5+6)X(100+10+1+0.1+0.01+0.001)]÷7 =(21X111.111)÷7 =(21÷7)X111.111 =3X111.111 =333.333