Alright, let's work through 85220356 times 40840894 step by step
85220356 × 40840894 = 40840894 × (85220356)
+ 40840894 × 6 yielding 245045364
+ 40840894 × 50 that is equal 2042044700
+ 40840894 × 300 that equals 12252268200
+ 40840894 × 0000 that is equal 0
+ 40840894 × 20000 what gives us 816817880000
+ 40840894 × 200000 what gives us 8168178800000
+ 40840894 × 5000000 that is equal 204204470000000
+ 40840894 × 80000000 what gives us 3267271520000000

= 3480475526038264
