Alright, let's work through 1215 times 2331 step by step
1215 × 2331 = 2331 × (1215)
+ 2331 × 5 giving us 11655
+ 2331 × 10 that is equal 23310
+ 2331 × 200 resulting in 466200
+ 2331 × 1000 that is equal 2331000

= 2832165
