Alright, let's work through 45256897 times 13798187 step by step
45256897 × 13798187 = 13798187 × (45256897)
+ 13798187 × 7 yielding 96587309
+ 13798187 × 90 giving us 1241836830
+ 13798187 × 800 yielding 11038549600
+ 13798187 × 6000 which equals 82789122000
+ 13798187 × 50000 that equals 689909350000
+ 13798187 × 200000 resulting in 2759637400000
+ 13798187 × 5000000 resulting in 68990935000000
+ 13798187 × 40000000 what gives us 551927480000000

= 624463127845739
