No problem, we've got 1379 and 1146 to multiply
1379 × 1146 = 1146 × (1379)
+ 1146 × 9 what gives us 10314
+ 1146 × 70 resulting in 80220
+ 1146 × 300 what gives us 343800
+ 1146 × 1000 what gives us 1146000

= 1580334
