Alright, let's work through 5411 times 2528 step by step
5411 × 2528 = 2528 × (5411)
+ 2528 × 1 that is equal 2528
+ 2528 × 10 yielding 25280
+ 2528 × 400 giving us 1011200
+ 2528 × 5000 producing 12640000

= 13679008
