Alright, let's work through 1258 times 3657 step by step
1258 × 3657 = 3657 × (1258)
+ 3657 × 8 that equals 29256
+ 3657 × 50 what gives us 182850
+ 3657 × 200 giving us 731400
+ 3657 × 1000 what gives us 3657000

= 4600506
