No problem, we've got 2505 and 8405 to multiply
2505 × 8405 = 8405 × (2505)
+ 8405 × 5 producing 42025
+ 8405 × 00 that equals 0
+ 8405 × 500 that is equal 4202500
+ 8405 × 2000 yielding 16810000

= 21054525
