Alright, let's work through 55154883 times 87917563 step by step
55154883 × 87917563 = 87917563 × (55154883)
+ 87917563 × 3 which equals 263752689
+ 87917563 × 80 what gives us 7033405040
+ 87917563 × 800 giving us 70334050400
+ 87917563 × 4000 that equals 351670252000
+ 87917563 × 50000 yielding 4395878150000
+ 87917563 × 100000 resulting in 8791756300000
+ 87917563 × 5000000 producing 439587815000000
+ 87917563 × 50000000 which equals 4395878150000000

= 4849082900910129
