No problem, we've got 81887480 and 41868289 to multiply
81887480 × 41868289 = 41868289 × (81887480)
+ 41868289 × 0 producing 0
+ 41868289 × 80 what gives us 3349463120
+ 41868289 × 400 that results in 16747315600
+ 41868289 × 7000 that results in 293078023000
+ 41868289 × 80000 yielding 3349463120000
+ 41868289 × 800000 what gives us 33494631200000
+ 41868289 × 1000000 producing 41868289000000
+ 41868289 × 80000000 producing 3349463120000000

= 3428488678121720
