Alright, let's work through 78479331 times 90943320 step by step
78479331 × 90943320 = 90943320 × (78479331)
+ 90943320 × 1 that results in 90943320
+ 90943320 × 30 giving us 2728299600
+ 90943320 × 300 giving us 27282996000
+ 90943320 × 9000 yielding 818489880000
+ 90943320 × 70000 yielding 6366032400000
+ 90943320 × 400000 that results in 36377328000000
+ 90943320 × 8000000 yielding 727546560000000
+ 90943320 × 70000000 that results in 6366032400000000

= 7137170912518920
