Alright, let's work through 16309831 times 71271804 step by step
16309831 × 71271804 = 71271804 × (16309831)
+ 71271804 × 1 what gives us 71271804
+ 71271804 × 30 giving us 2138154120
+ 71271804 × 800 that results in 57017443200
+ 71271804 × 9000 which equals 641446236000
+ 71271804 × 00000 giving us 0
+ 71271804 × 300000 that is equal 21381541200000
+ 71271804 × 6000000 yielding 427630824000000
+ 71271804 × 10000000 yielding 712718040000000

= 1162431078305124
