Alright, let's work through 81028226 times 83337594 step by step
81028226 × 83337594 = 83337594 × (81028226)
+ 83337594 × 6 what gives us 500025564
+ 83337594 × 20 that is equal 1666751880
+ 83337594 × 200 that results in 16667518800
+ 83337594 × 8000 what gives us 666700752000
+ 83337594 × 20000 producing 1666751880000
+ 83337594 × 000000 giving us 0
+ 83337594 × 1000000 that is equal 83337594000000
+ 83337594 × 80000000 that results in 6667007520000000

= 6752697400928244
