No problem, we've got 81041227 and 84447743 to multiply
81041227 × 84447743 = 84447743 × (81041227)
+ 84447743 × 7 giving us 591134201
+ 84447743 × 20 resulting in 1688954860
+ 84447743 × 200 giving us 16889548600
+ 84447743 × 1000 yielding 84447743000
+ 84447743 × 40000 what gives us 3377909720000
+ 84447743 × 000000 yielding 0
+ 84447743 × 1000000 which equals 84447743000000
+ 84447743 × 80000000 that is equal 6755819440000000

= 6843748710100661
