Alright, let's work through 5486 times 3900 step by step
5486 × 3900 = 3900 × (5486)
+ 3900 × 6 yielding 23400
+ 3900 × 80 what gives us 312000
+ 3900 × 400 which equals 1560000
+ 3900 × 5000 producing 19500000

= 21395400
