No problem, we've got 80669489 and 78193008 to multiply
80669489 × 78193008 = 78193008 × (80669489)
+ 78193008 × 9 producing 703737072
+ 78193008 × 80 which equals 6255440640
+ 78193008 × 400 yielding 31277203200
+ 78193008 × 9000 yielding 703737072000
+ 78193008 × 60000 which equals 4691580480000
+ 78193008 × 600000 giving us 46915804800000
+ 78193008 × 0000000 that equals 0
+ 78193008 × 80000000 giving us 6255440640000000

= 6307789998732912
