No problem, we've got 5129 and 2505 to multiply
5129 × 2505 = 2505 × (5129)
+ 2505 × 9 yielding 22545
+ 2505 × 20 resulting in 50100
+ 2505 × 100 that is equal 250500
+ 2505 × 5000 resulting in 12525000

= 12848145
