No problem, we've got 5804 and 3943 to multiply
5804 × 3943 = 3943 × (5804)
+ 3943 × 4 giving us 15772
+ 3943 × 00 what gives us 0
+ 3943 × 800 that equals 3154400
+ 3943 × 5000 that is equal 19715000

= 22885172
