No problem, we've got 5711 and 1821 to multiply
5711 × 1821 = 1821 × (5711)
+ 1821 × 1 which equals 1821
+ 1821 × 10 that equals 18210
+ 1821 × 700 yielding 1274700
+ 1821 × 5000 what gives us 9105000

= 10399731
