Alright, let's work through 51607478 times 42511133 step by step
51607478 × 42511133 = 42511133 × (51607478)
+ 42511133 × 8 that equals 340089064
+ 42511133 × 70 resulting in 2975779310
+ 42511133 × 400 producing 17004453200
+ 42511133 × 7000 that equals 297577931000
+ 42511133 × 00000 yielding 0
+ 42511133 × 600000 producing 25506679800000
+ 42511133 × 1000000 which equals 42511133000000
+ 42511133 × 50000000 giving us 2125556650000000

= 2193892361052574
