Alright, let's work through 5865 times 8087 step by step
5865 × 8087 = 8087 × (5865)
+ 8087 × 5 giving us 40435
+ 8087 × 60 yielding 485220
+ 8087 × 800 that equals 6469600
+ 8087 × 5000 that equals 40435000

= 47430255
