Alright, let's work through 4891788 times 52478429 step by step
4891788 × 52478429 = 52478429 × (4891788)
+ 52478429 × 8 resulting in 419827432
+ 52478429 × 80 what gives us 4198274320
+ 52478429 × 700 yielding 36734900300
+ 52478429 × 1000 that is equal 52478429000
+ 52478429 × 90000 that results in 4723058610000
+ 52478429 × 800000 that results in 41982743200000
+ 52478429 × 4000000 that is equal 209913716000000

= 256713349241052
