No problem, we've got 1355 and 4223 to multiply
1355 × 4223 = 4223 × (1355)
+ 4223 × 5 producing 21115
+ 4223 × 50 that equals 211150
+ 4223 × 300 yielding 1266900
+ 4223 × 1000 that equals 4223000

= 5722165
