Alright, let's work through 63404624 times 78006446 step by step
63404624 × 78006446 = 78006446 × (63404624)
+ 78006446 × 4 that results in 312025784
+ 78006446 × 20 producing 1560128920
+ 78006446 × 600 that is equal 46803867600
+ 78006446 × 4000 that results in 312025784000
+ 78006446 × 00000 that is equal 0
+ 78006446 × 400000 yielding 31202578400000
+ 78006446 × 3000000 that is equal 234019338000000
+ 78006446 × 60000000 that is equal 4680386760000000

= 4945969378206304
