Alright, let's work through 8531885 times 87427020 step by step
8531885 × 87427020 = 87427020 × (8531885)
+ 87427020 × 5 producing 437135100
+ 87427020 × 80 resulting in 6994161600
+ 87427020 × 800 that results in 69941616000
+ 87427020 × 1000 what gives us 87427020000
+ 87427020 × 30000 that is equal 2622810600000
+ 87427020 × 500000 which equals 43713510000000
+ 87427020 × 8000000 yielding 699416160000000

= 745917280532700
