No problem, we've got 80026478 and 64213115 to multiply
80026478 × 64213115 = 64213115 × (80026478)
+ 64213115 × 8 yielding 513704920
+ 64213115 × 70 resulting in 4494918050
+ 64213115 × 400 producing 25685246000
+ 64213115 × 6000 that equals 385278690000
+ 64213115 × 20000 giving us 1284262300000
+ 64213115 × 000000 that equals 0
+ 64213115 × 0000000 that is equal 0
+ 64213115 × 80000000 yielding 5137049200000000

= 5138749434858970
