Alright, let's work through 5400 times 8621 step by step
5400 × 8621 = 8621 × (5400)
+ 8621 × 0 that equals 0
+ 8621 × 00 resulting in 0
+ 8621 × 400 that equals 3448400
+ 8621 × 5000 that equals 43105000

= 46553400
