Alright, let's work through 12758577 times 51240600 step by step
12758577 × 51240600 = 51240600 × (12758577)
+ 51240600 × 7 giving us 358684200
+ 51240600 × 70 what gives us 3586842000
+ 51240600 × 500 yielding 25620300000
+ 51240600 × 8000 what gives us 409924800000
+ 51240600 × 50000 what gives us 2562030000000
+ 51240600 × 700000 giving us 35868420000000
+ 51240600 × 2000000 resulting in 102481200000000
+ 51240600 × 10000000 that results in 512406000000000

= 653757140626200
