Alright, let's work through 4134 times 398 step by step
4134 × 398 = 398 × (4134)
+ 398 × 4 producing 1592
+ 398 × 30 resulting in 11940
+ 398 × 100 that equals 39800
+ 398 × 4000 which equals 1592000

= 1645332
