Alright, let's work through 3613 times 448 step by step
3613 × 448 = 448 × (3613)
+ 448 × 3 yielding 1344
+ 448 × 10 what gives us 4480
+ 448 × 600 what gives us 268800
+ 448 × 3000 that results in 1344000

= 1618624
