No problem, we've got 84064495 and 13399735 to multiply
84064495 × 13399735 = 13399735 × (84064495)
+ 13399735 × 5 producing 66998675
+ 13399735 × 90 what gives us 1205976150
+ 13399735 × 400 yielding 5359894000
+ 13399735 × 4000 that equals 53598940000
+ 13399735 × 60000 yielding 803984100000
+ 13399735 × 000000 what gives us 0
+ 13399735 × 4000000 which equals 53598940000000
+ 13399735 × 80000000 giving us 1071978800000000

= 1126441955908825
