Alright, let's work through 3665 times 839 step by step
3665 × 839 = 839 × (3665)
+ 839 × 5 resulting in 4195
+ 839 × 60 that results in 50340
+ 839 × 600 that is equal 503400
+ 839 × 3000 giving us 2517000

= 3074935
