Alright, let's work through 80688893 times 53599386 step by step
80688893 × 53599386 = 53599386 × (80688893)
+ 53599386 × 3 that is equal 160798158
+ 53599386 × 90 what gives us 4823944740
+ 53599386 × 800 what gives us 42879508800
+ 53599386 × 8000 that is equal 428795088000
+ 53599386 × 80000 that results in 4287950880000
+ 53599386 × 600000 that results in 32159631600000
+ 53599386 × 0000000 what gives us 0
+ 53599386 × 80000000 that results in 4287950880000000

= 4324875121819698
