Alright, let's work through 42666794 times 63143467 step by step
42666794 × 63143467 = 63143467 × (42666794)
+ 63143467 × 4 resulting in 252573868
+ 63143467 × 90 producing 5682912030
+ 63143467 × 700 that equals 44200426900
+ 63143467 × 6000 resulting in 378860802000
+ 63143467 × 60000 what gives us 3788608020000
+ 63143467 × 600000 resulting in 37886080200000
+ 63143467 × 2000000 what gives us 126286934000000
+ 63143467 × 40000000 yielding 2525738680000000

= 2694129298934798
