No problem, we've got 80673042 and 10486358 to multiply
80673042 × 10486358 = 10486358 × (80673042)
+ 10486358 × 2 resulting in 20972716
+ 10486358 × 40 yielding 419454320
+ 10486358 × 000 which equals 0
+ 10486358 × 3000 giving us 31459074000
+ 10486358 × 70000 what gives us 734045060000
+ 10486358 × 600000 which equals 6291814800000
+ 10486358 × 0000000 that equals 0
+ 10486358 × 80000000 producing 838908640000000

= 845966399361036
