Alright, let's work through 3115 times 3689 step by step
3115 × 3689 = 3689 × (3115)
+ 3689 × 5 which equals 18445
+ 3689 × 10 that equals 36890
+ 3689 × 100 yielding 368900
+ 3689 × 3000 which equals 11067000

= 11491235
