No problem, we've got 2005 and 8101 to multiply
2005 × 8101 = 8101 × (2005)
+ 8101 × 5 giving us 40505
+ 8101 × 00 what gives us 0
+ 8101 × 000 that is equal 0
+ 8101 × 2000 yielding 16202000

= 16242505
