No problem, we've got 1390 and 5731 to multiply
1390 × 5731 = 5731 × (1390)
+ 5731 × 0 that is equal 0
+ 5731 × 90 what gives us 515790
+ 5731 × 300 that results in 1719300
+ 5731 × 1000 what gives us 5731000

= 7966090
