Alright, let's work through 54291755 times 28013402 step by step
54291755 × 28013402 = 28013402 × (54291755)
+ 28013402 × 5 producing 140067010
+ 28013402 × 50 yielding 1400670100
+ 28013402 × 700 resulting in 19609381400
+ 28013402 × 1000 giving us 28013402000
+ 28013402 × 90000 that is equal 2521206180000
+ 28013402 × 200000 yielding 5602680400000
+ 28013402 × 4000000 which equals 112053608000000
+ 28013402 × 50000000 that is equal 1400670100000000

= 1520896758100510
