Is Zakat obligatory on 1858 kg of olive oil, and what is the amount of this Zakat?

Olives are among the zakatable assets according to Imam Malik, and the proof for this is the Almighty's saying: "And give its due on the day of its harvest." If a person's land produces five wasqs of olives, they must give half of one-tenth of the oil obtained from them if the land is irrigated with effort, and one-tenth if it is irrigated by rainwater or similar means. So, whoever obtains 1858 kilograms of oil must give one-tenth or half of one-tenth, depending on the irrigation method. As for those who do not consider olives among the zakatable assets, zakat on oil is not obligatory unless it is sold and its price remains for a year and reaches the nisab.