No problem, we've got 4008 and 5305 to multiply
4008 × 5305 = 5305 × (4008)
+ 5305 × 8 yielding 42440
+ 5305 × 00 which equals 0
+ 5305 × 000 yielding 0
+ 5305 × 4000 that equals 21220000

= 21262440
