We're going to solve 6664 multiplied by 1864
6664 × 1864 = 1864 × (6664)
+ 1864 × 4 yielding 7456
+ 1864 × 60 that is equal 111840
+ 1864 × 600 that is equal 1118400
+ 1864 × 6000 resulting in 11184000

= 12421696
