Alright, let's work through 54639059 times 53578671 step by step
54639059 × 53578671 = 53578671 × (54639059)
+ 53578671 × 9 giving us 482208039
+ 53578671 × 50 yielding 2678933550
+ 53578671 × 000 producing 0
+ 53578671 × 9000 yielding 482208039000
+ 53578671 × 30000 that equals 1607360130000
+ 53578671 × 600000 what gives us 32147202600000
+ 53578671 × 4000000 that is equal 214314684000000
+ 53578671 × 50000000 which equals 2678933550000000

= 2927488165910589
