Alright, let's work through 54328751 times 67549243 step by step
54328751 × 67549243 = 67549243 × (54328751)
+ 67549243 × 1 that results in 67549243
+ 67549243 × 50 yielding 3377462150
+ 67549243 × 700 yielding 47284470100
+ 67549243 × 8000 resulting in 540393944000
+ 67549243 × 20000 giving us 1350984860000
+ 67549243 × 300000 that equals 20264772900000
+ 67549243 × 4000000 producing 270196972000000
+ 67549243 × 50000000 resulting in 3377462150000000

= 3669866003185493
