20:36:14 Create new PHPExcel object
20:36:14 Add some data and formulas
20:36:14 Calculated data
Value of A1 [=B1]: 100
Value of B1 [=A1+1]: 100
Value of A2 [=B2+1]: 100
Value of B2 [=A2]: 99
20:36:14 Write to Excel2007 format

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