No problem, we've got 1657 and 2342 to multiply
1657 × 2342 = 2342 × (1657)
+ 2342 × 7 what gives us 16394
+ 2342 × 50 resulting in 117100
+ 2342 × 600 that results in 1405200
+ 2342 × 1000 resulting in 2342000

= 3880694
