Alright, let's work through 51512384 times 48813571 step by step
51512384 × 48813571 = 48813571 × (51512384)
+ 48813571 × 4 resulting in 195254284
+ 48813571 × 80 that equals 3905085680
+ 48813571 × 300 which equals 14644071300
+ 48813571 × 2000 which equals 97627142000
+ 48813571 × 10000 giving us 488135710000
+ 48813571 × 500000 yielding 24406785500000
+ 48813571 × 1000000 yielding 48813571000000
+ 48813571 × 50000000 that equals 2440678550000000

= 2514503413763264
