Alright, let's work through 54563076 times 90642321 step by step
54563076 × 90642321 = 90642321 × (54563076)
+ 90642321 × 6 which equals 543853926
+ 90642321 × 70 that equals 6344962470
+ 90642321 × 000 that equals 0
+ 90642321 × 3000 that results in 271926963000
+ 90642321 × 60000 which equals 5438539260000
+ 90642321 × 500000 producing 45321160500000
+ 90642321 × 4000000 yielding 362569284000000
+ 90642321 × 50000000 resulting in 4532116050000000

= 4945723849539396
