No problem, we've got 80736997 and 66030830 to multiply
80736997 × 66030830 = 66030830 × (80736997)
+ 66030830 × 7 yielding 462215810
+ 66030830 × 90 that results in 5942774700
+ 66030830 × 900 giving us 59427747000
+ 66030830 × 6000 what gives us 396184980000
+ 66030830 × 30000 producing 1980924900000
+ 66030830 × 700000 what gives us 46221581000000
+ 66030830 × 0000000 resulting in 0
+ 66030830 × 80000000 producing 5282466400000000

= 5331130923617510
