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2014-02-18T17:55:55+02:00
109*(81-75);2+504*3=109*6:2+504:3=109*3+168+327+168+495  
(640+640:8):(11*3*3:11)=(640+80):(33*3:11)=720:(99:11)=720:9=80 

1000-725:5+(3*92+24) : 100 =1000-145+(276+24) :100 =855+300 :100=855+3=858