Alright, let's work through 5780 times 2311 step by step
5780 × 2311 = 2311 × (5780)
+ 2311 × 0 that is equal 0
+ 2311 × 80 that results in 184880
+ 2311 × 700 giving us 1617700
+ 2311 × 5000 that is equal 11555000

= 13357580
