No problem, we've got 1528 and 2431 to multiply
1528 × 2431 = 2431 × (1528)
+ 2431 × 8 resulting in 19448
+ 2431 × 20 that is equal 48620
+ 2431 × 500 which equals 1215500
+ 2431 × 1000 yielding 2431000

= 3714568
