We're going to solve 4245 multiplied by 4104
4245 × 4104 = 4104 × (4245)
+ 4104 × 5 giving us 20520
+ 4104 × 40 what gives us 164160
+ 4104 × 200 yielding 820800
+ 4104 × 4000 producing 16416000

= 17421480
