2013+201.3+20.13+2.013

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2013+201.3+20.13+2.0132013+201.3+20.13+2.0132013+201.3+20.13+2.0131.2013+201.3+20.13+2.013=2214.3+20

2013+201.3+20.13+2.013
2013+201.3+20.13+2.013

2013+201.3+20.13+2.013
1.2013+201.3+20.13+2.013
=2214.3+20.13+2.013
=2236.443
2.2013+201.3+20.13+2.013
=2.013*1000+2.013*100+2.013*10+2.013
=2.013*(1000+100+10+1)
=2.013*1111
=2236.443

2013+201.3+20.13+2.013
=2.013*1000+2.013*100+2.013*10+2.013
=2.013*(1000+100+10+1)
=2.013*1111
=2236.443

2013*1.111=
自己算吧