No problem, we've got 2809 and 4104 to multiply
2809 × 4104 = 4104 × (2809)
+ 4104 × 9 which equals 36936
+ 4104 × 00 producing 0
+ 4104 × 800 what gives us 3283200
+ 4104 × 2000 giving us 8208000

= 11528136
