Alright, let's work through 1085 times 1209 step by step
1085 × 1209 = 1209 × (1085)
+ 1209 × 5 that equals 6045
+ 1209 × 80 which equals 96720
+ 1209 × 000 which equals 0
+ 1209 × 1000 yielding 1209000

= 1311765
