Alright, let's work through 5840 times 6858 step by step
5840 × 6858 = 6858 × (5840)
+ 6858 × 0 yielding 0
+ 6858 × 40 resulting in 274320
+ 6858 × 800 giving us 5486400
+ 6858 × 5000 giving us 34290000

= 40050720
