Alright, let's work through 51738671 times 63428004 step by step
51738671 × 63428004 = 63428004 × (51738671)
+ 63428004 × 1 that results in 63428004
+ 63428004 × 70 resulting in 4439960280
+ 63428004 × 600 resulting in 38056802400
+ 63428004 × 8000 that results in 507424032000
+ 63428004 × 30000 what gives us 1902840120000
+ 63428004 × 700000 yielding 44399602800000
+ 63428004 × 1000000 yielding 63428004000000
+ 63428004 × 50000000 which equals 3171400200000000

= 3281680631142684
