No problem, we've got 9828 and 2080 to multiply
9828 × 2080 = 2080 × (9828)
+ 2080 × 8 giving us 16640
+ 2080 × 20 what gives us 41600
+ 2080 × 800 yielding 1664000
+ 2080 × 9000 yielding 18720000

= 20442240
