pro·rate 
/proʊˈreɪt/ verb
pro·rates; pro·rat·ed; pro·rat·ing /proʊˈreɪt/ verb [+ obj] US : to calculate (something) according to the specific amount that someone has done, used, etc.
▪ We will prorate your monthly rent for the remaining 10 days on your lease. [=you will pay 10 days' worth of a month's rent] ▪ The player's annual salary was prorated because he only played for the last three months of the season.
▪ We will prorate your monthly rent for the remaining 10 days on your lease. [=you will pay 10 days' worth of a month's rent] ▪ The player's annual salary was prorated because he only played for the last three months of the season.
— pro·ra·tion /proʊˈreɪʃən/ noun [noncount]
/proʊˈreɪʃən/ noun [noncount]
