How to calculate the hit rate of Jiaaole skill?

Hit ratio, skill hit plus extra hit (loot, equipment) plus skill hit (0.3× own skill ÷ enemy speed) minus enemy evasion (loot, equipment), self 1000 skill, others 1000 speed is 0.3 hit, skill, if equipped with 40 loot, there are 30.

Crit is a skill except 20, 1000 skill is 50 crit, plus equipment and booty.