No problem, we've got 3902 and 5009 to multiply
3902 × 5009 = 5009 × (3902)
+ 5009 × 2 resulting in 10018
+ 5009 × 00 yielding 0
+ 5009 × 900 which equals 4508100
+ 5009 × 3000 giving us 15027000

= 19545118
