No problem, we've got 55217471 and 72320131 to multiply
55217471 × 72320131 = 72320131 × (55217471)
+ 72320131 × 1 yielding 72320131
+ 72320131 × 70 that equals 5062409170
+ 72320131 × 400 giving us 28928052400
+ 72320131 × 7000 giving us 506240917000
+ 72320131 × 10000 which equals 723201310000
+ 72320131 × 200000 producing 14464026200000
+ 72320131 × 5000000 that equals 361600655000000
+ 72320131 × 50000000 resulting in 3616006550000000

= 3993334736208701
