No problem, we've got 86326469 and 79935761 to multiply
86326469 × 79935761 = 79935761 × (86326469)
+ 79935761 × 9 which equals 719421849
+ 79935761 × 60 which equals 4796145660
+ 79935761 × 400 that equals 31974304400
+ 79935761 × 6000 that is equal 479614566000
+ 79935761 × 20000 yielding 1598715220000
+ 79935761 × 300000 giving us 23980728300000
+ 79935761 × 6000000 yielding 479614566000000
+ 79935761 × 80000000 yielding 6394860880000000

= 6900571993957909
