Alright, let's work through 54387804 times 56539175 step by step
54387804 × 56539175 = 56539175 × (54387804)
+ 56539175 × 4 producing 226156700
+ 56539175 × 00 what gives us 0
+ 56539175 × 800 giving us 45231340000
+ 56539175 × 7000 that equals 395774225000
+ 56539175 × 80000 which equals 4523134000000
+ 56539175 × 300000 yielding 16961752500000
+ 56539175 × 4000000 which equals 226156700000000
+ 56539175 × 50000000 which equals 2826958750000000

= 3075041568221700
