No problem, we've got 1263 and 2561 to multiply
1263 × 2561 = 2561 × (1263)
+ 2561 × 3 which equals 7683
+ 2561 × 60 giving us 153660
+ 2561 × 200 which equals 512200
+ 2561 × 1000 which equals 2561000

= 3234543
