Alright, let's work through 3634 times 3578 step by step
3634 × 3578 = 3578 × (3634)
+ 3578 × 4 that equals 14312
+ 3578 × 30 resulting in 107340
+ 3578 × 600 which equals 2146800
+ 3578 × 3000 resulting in 10734000

= 13002452
