We're going to solve 3994 multiplied by 2240
3994 × 2240 = 2240 × (3994)
+ 2240 × 4 which equals 8960
+ 2240 × 90 what gives us 201600
+ 2240 × 900 which equals 2016000
+ 2240 × 3000 giving us 6720000

= 8946560
