No problem, we've got 1273 and 1605 to multiply
1273 × 1605 = 1605 × (1273)
+ 1605 × 3 what gives us 4815
+ 1605 × 70 resulting in 112350
+ 1605 × 200 giving us 321000
+ 1605 × 1000 producing 1605000

= 2043165
