No problem, we've got 12912437 and 78340064 to multiply
12912437 × 78340064 = 78340064 × (12912437)
+ 78340064 × 7 which equals 548380448
+ 78340064 × 30 that is equal 2350201920
+ 78340064 × 400 yielding 31336025600
+ 78340064 × 2000 that results in 156680128000
+ 78340064 × 10000 producing 783400640000
+ 78340064 × 900000 that equals 70506057600000
+ 78340064 × 2000000 that is equal 156680128000000
+ 78340064 × 10000000 which equals 783400640000000

= 1011561140975968
