No problem, we've got 1646 and 1306 to multiply
1646 × 1306 = 1306 × (1646)
+ 1306 × 6 giving us 7836
+ 1306 × 40 resulting in 52240
+ 1306 × 600 what gives us 783600
+ 1306 × 1000 which equals 1306000

= 2149676
