No problem, we've got 84852109 and 80620162 to multiply
84852109 × 80620162 = 80620162 × (84852109)
+ 80620162 × 9 which equals 725581458
+ 80620162 × 00 that is equal 0
+ 80620162 × 100 that equals 8062016200
+ 80620162 × 2000 that equals 161240324000
+ 80620162 × 50000 resulting in 4031008100000
+ 80620162 × 800000 resulting in 64496129600000
+ 80620162 × 4000000 yielding 322480648000000
+ 80620162 × 80000000 giving us 6449612960000000

= 6840790773621658
