No problem, we've got 6667135 and 61478351 to multiply
6667135 × 61478351 = 61478351 × (6667135)
+ 61478351 × 5 yielding 307391755
+ 61478351 × 30 what gives us 1844350530
+ 61478351 × 100 giving us 6147835100
+ 61478351 × 7000 giving us 430348457000
+ 61478351 × 60000 yielding 3688701060000
+ 61478351 × 600000 producing 36887010600000
+ 61478351 × 6000000 what gives us 368870106000000

= 409884465694385
