Alright, let's work through 54855550 times 7280396 step by step
54855550 × 7280396 = 7280396 × (54855550)
+ 7280396 × 0 giving us 0
+ 7280396 × 50 producing 364019800
+ 7280396 × 500 resulting in 3640198000
+ 7280396 × 5000 that is equal 36401980000
+ 7280396 × 50000 producing 364019800000
+ 7280396 × 800000 that results in 5824316800000
+ 7280396 × 4000000 that equals 29121584000000
+ 7280396 × 50000000 what gives us 364019800000000

= 399370126797800
