(679+790)+(20909*67990)+6789-2347*6789+(780+560)​ = 1405678725

1) 679+790 = 1469

2) 20909*67990 = 1421602910

3) 780+560 = 1340

4) 2347*6789 = 15933783

5) 1469+1421602910 = 1421604379

6) 1421604379+6789 = 1421611168

7) 1421611168-15933783 = 1405677385

8) 1405677385+1340 = 1405678725    

Ответ:

(679+790)+(20909*67990)+6789-2347*6789+(780+560)=1, 405, 678 , 725