Alright, let's work through 78386468 times 67203933 step by step
78386468 × 67203933 = 67203933 × (78386468)
+ 67203933 × 8 that equals 537631464
+ 67203933 × 60 what gives us 4032235980
+ 67203933 × 400 resulting in 26881573200
+ 67203933 × 6000 that equals 403223598000
+ 67203933 × 80000 that is equal 5376314640000
+ 67203933 × 300000 giving us 20161179900000
+ 67203933 × 8000000 that results in 537631464000000
+ 67203933 × 70000000 which equals 4704275310000000

= 5267878943578644
