Alright, let's work through 3605 times 3867 step by step
3605 × 3867 = 3867 × (3605)
+ 3867 × 5 that equals 19335
+ 3867 × 00 giving us 0
+ 3867 × 600 giving us 2320200
+ 3867 × 3000 giving us 11601000

= 13940535
