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2014-03-21T22:55:02+02:00
  1363      
       1364         1365 1366 1367
 
  1363+
  1364+
  1365+
  1366+
  1367
  --------
  6825
2014-03-21T22:55:07+02:00
X+(x+1)+(x+2)+(x+3)+(x+4)
x+2=1365
x=1363, x+1=1364. x+3=1366, x+4=1367
suma =1363+1364+1365+1366+1367=6825