Alright, let's work through 3340 times 6320 step by step
3340 × 6320 = 6320 × (3340)
+ 6320 × 0 resulting in 0
+ 6320 × 40 what gives us 252800
+ 6320 × 300 resulting in 1896000
+ 6320 × 3000 what gives us 18960000

= 21108800
