Alright, let's work through 1674 times 2578 step by step
1674 × 2578 = 2578 × (1674)
+ 2578 × 4 producing 10312
+ 2578 × 70 that equals 180460
+ 2578 × 600 yielding 1546800
+ 2578 × 1000 yielding 2578000

= 4315572
