Takes time, Costs money, Requires
-는 데 걸리다/들다 is added to the end of verbs to express how much money, time, or effort is involved in doing a task. It means 'takes/requires/costs ... to (do)’ in English. This expression is made by adding -는 데 걸리다/들다 to the stems of verbs. -는 데 걸리다 is used when expressing an amount of time required, and -는 데 들다 is used when expressing an amount of money required.