No problem, we've got 78540309 and 66289101 to multiply
78540309 × 66289101 = 66289101 × (78540309)
+ 66289101 × 9 giving us 596601909
+ 66289101 × 00 that is equal 0
+ 66289101 × 300 that results in 19886730300
+ 66289101 × 0000 that is equal 0
+ 66289101 × 40000 producing 2651564040000
+ 66289101 × 500000 yielding 33144550500000
+ 66289101 × 8000000 producing 530312808000000
+ 66289101 × 70000000 yielding 4640237070000000

= 5206366475872209
