Alright, let's work through 5818 times 2160 step by step
5818 × 2160 = 2160 × (5818)
+ 2160 × 8 yielding 17280
+ 2160 × 10 that is equal 21600
+ 2160 × 800 yielding 1728000
+ 2160 × 5000 producing 10800000

= 12566880
