No problem, we've got 2104 and 1811 to multiply
2104 × 1811 = 1811 × (2104)
+ 1811 × 4 that is equal 7244
+ 1811 × 00 what gives us 0
+ 1811 × 100 giving us 181100
+ 1811 × 2000 what gives us 3622000

= 3810344
