Alright, let's work through 54288689 times 74555376 step by step
54288689 × 74555376 = 74555376 × (54288689)
+ 74555376 × 9 what gives us 670998384
+ 74555376 × 80 resulting in 5964430080
+ 74555376 × 600 which equals 44733225600
+ 74555376 × 8000 that is equal 596443008000
+ 74555376 × 80000 what gives us 5964430080000
+ 74555376 × 200000 that equals 14911075200000
+ 74555376 × 4000000 resulting in 298221504000000
+ 74555376 × 50000000 that results in 3727768800000000

= 4047513620942064
