Alright, let's work through 3658 times 3798 step by step
3658 × 3798 = 3798 × (3658)
+ 3798 × 8 that equals 30384
+ 3798 × 50 what gives us 189900
+ 3798 × 600 which equals 2278800
+ 3798 × 3000 yielding 11394000

= 13893084
