((3.711 - 242.052:69)×27-5278)×320 =

((3,711 - 242,052÷69)×27-5278)×320 = 1)242,052÷69=3,508. 2)3,711-3,508=0,203. 3)0,203×27=5,481. 4)5,481-5278=-5272,519. 5)-5272,519×320=-1687206,08.