Alright, let's work through 6080 times 3490 step by step
6080 × 3490 = 3490 × (6080)
+ 3490 × 0 that equals 0
+ 3490 × 80 resulting in 279200
+ 3490 × 000 what gives us 0
+ 3490 × 6000 what gives us 20940000

= 21219200
