No problem, we've got 1603 and 7163 to multiply
1603 × 7163 = 7163 × (1603)
+ 7163 × 3 giving us 21489
+ 7163 × 00 which equals 0
+ 7163 × 600 resulting in 4297800
+ 7163 × 1000 what gives us 7163000

= 11482289
