No problem, we've got 1243 and 8104 to multiply
1243 × 8104 = 8104 × (1243)
+ 8104 × 3 giving us 24312
+ 8104 × 40 which equals 324160
+ 8104 × 200 what gives us 1620800
+ 8104 × 1000 resulting in 8104000

= 10073272
