No problem, we've got 68075144 and 72156337 to multiply
68075144 × 72156337 = 72156337 × (68075144)
+ 72156337 × 4 resulting in 288625348
+ 72156337 × 40 producing 2886253480
+ 72156337 × 100 which equals 7215633700
+ 72156337 × 5000 that results in 360781685000
+ 72156337 × 70000 producing 5050943590000
+ 72156337 × 000000 what gives us 0
+ 72156337 × 8000000 which equals 577250696000000
+ 72156337 × 60000000 which equals 4329380220000000

= 4912053031787528
