We're going to solve 4390 multiplied by 3915
4390 × 3915 = 3915 × (4390)
+ 3915 × 0 resulting in 0
+ 3915 × 90 giving us 352350
+ 3915 × 300 yielding 1174500
+ 3915 × 4000 producing 15660000

= 17186850
