Alright, let's work through 85443789 times 3409366 step by step
85443789 × 3409366 = 3409366 × (85443789)
+ 3409366 × 9 resulting in 30684294
+ 3409366 × 80 producing 272749280
+ 3409366 × 700 that is equal 2386556200
+ 3409366 × 3000 which equals 10228098000
+ 3409366 × 40000 giving us 136374640000
+ 3409366 × 400000 which equals 1363746400000
+ 3409366 × 5000000 yielding 17046830000000
+ 3409366 × 80000000 that is equal 272749280000000

= 291309149127774
