Alright, let's work through 2287 times 1672 step by step
2287 × 1672 = 1672 × (2287)
+ 1672 × 7 producing 11704
+ 1672 × 80 what gives us 133760
+ 1672 × 200 what gives us 334400
+ 1672 × 2000 yielding 3344000

= 3823864
