No problem, we've got 1428 and 4623 to multiply
1428 × 4623 = 4623 × (1428)
+ 4623 × 8 giving us 36984
+ 4623 × 20 what gives us 92460
+ 4623 × 400 resulting in 1849200
+ 4623 × 1000 producing 4623000

= 6601644
