Alright, let's work through 1816 times 4307 step by step
1816 × 4307 = 4307 × (1816)
+ 4307 × 6 producing 25842
+ 4307 × 10 yielding 43070
+ 4307 × 800 resulting in 3445600
+ 4307 × 1000 what gives us 4307000

= 7821512
