Alright, let's work through 3690 times 89 step by step
3690 × 89 = 89 × (3690)
+ 89 × 0 producing 0
+ 89 × 90 that results in 8010
+ 89 × 600 that is equal 53400
+ 89 × 3000 which equals 267000

= 328410
