No problem, we've got 5877 and 6821 to multiply
5877 × 6821 = 6821 × (5877)
+ 6821 × 7 what gives us 47747
+ 6821 × 70 what gives us 477470
+ 6821 × 800 producing 5456800
+ 6821 × 5000 that results in 34105000

= 40087017
