Alright, let's work through 1379 times 4257 step by step
1379 × 4257 = 4257 × (1379)
+ 4257 × 9 that equals 38313
+ 4257 × 70 yielding 297990
+ 4257 × 300 that results in 1277100
+ 4257 × 1000 which equals 4257000

= 5870403
