Alright, let's work through 1812 times 7807 step by step
1812 × 7807 = 7807 × (1812)
+ 7807 × 2 producing 15614
+ 7807 × 10 that results in 78070
+ 7807 × 800 that is equal 6245600
+ 7807 × 1000 that is equal 7807000

= 14146284
