No problem, we've got 80407409 and 97872705 to multiply
80407409 × 97872705 = 97872705 × (80407409)
+ 97872705 × 9 resulting in 880854345
+ 97872705 × 00 producing 0
+ 97872705 × 400 resulting in 39149082000
+ 97872705 × 7000 producing 685108935000
+ 97872705 × 00000 producing 0
+ 97872705 × 400000 yielding 39149082000000
+ 97872705 × 0000000 resulting in 0
+ 97872705 × 80000000 resulting in 7829816400000000

= 7869690620871345
