No problem, we've got 80407997 and 74390581 to multiply
80407997 × 74390581 = 74390581 × (80407997)
+ 74390581 × 7 yielding 520734067
+ 74390581 × 90 that equals 6695152290
+ 74390581 × 900 giving us 66951522900
+ 74390581 × 7000 which equals 520734067000
+ 74390581 × 00000 resulting in 0
+ 74390581 × 400000 that equals 29756232400000
+ 74390581 × 0000000 what gives us 0
+ 74390581 × 80000000 what gives us 5951246480000000

= 5981597613876257
