Alright, let's work through 81077238 times 85726144 step by step
81077238 × 85726144 = 85726144 × (81077238)
+ 85726144 × 8 that is equal 685809152
+ 85726144 × 30 that equals 2571784320
+ 85726144 × 200 yielding 17145228800
+ 85726144 × 7000 resulting in 600083008000
+ 85726144 × 70000 giving us 6000830080000
+ 85726144 × 000000 that equals 0
+ 85726144 × 1000000 yielding 85726144000000
+ 85726144 × 80000000 yielding 6858091520000000

= 6950438979910272
