We're going to solve 6890 multiplied by 9663
6890 × 9663 = 9663 × (6890)
+ 9663 × 0 that is equal 0
+ 9663 × 90 what gives us 869670
+ 9663 × 800 what gives us 7730400
+ 9663 × 6000 yielding 57978000

= 66578070
