차를 마신 후에 차 값은 '돈을 넣는 곳'에 내면 됩니다 can be rephrased as 차를 마신 후에 '돈을 넣는 곳'에 차 값을 내면 됩니다 You did right for the forepart. 차를 마신 후에 = After you drink tea '돈을 넣는 곳' is what it says literally. 'Where-you-put-money-in' As for 차 값을 내면 됩니다, the google translation got pretty exact one. When you see this, you will notice -면 is in front of 되다. 되다 has a lot of different meanings. I looked up the dictionary for this for the first time and got more than 30 entries. When 되다 placed after -면, then it would mean "It's good to go" You may want to check more from this link http://www.mykoreanramblings.com/2014/12/29/its-enough-to-v-%EC%9C%BC%EB%A9%B4-%EB%90%98%EB%8B%A4/ But I guess -면 되다 has more meanings than that of link's. For example, A: 이렇게 먹으면 돼? (Can I eat it like this?) B: 그렇게 먹으면 돼. (Yes. you can eat it like that.) A: 그냥 선생님 붙잡고 점심 사달라 그러자. (Let's just grab the teacher and ask him to treat us lunch) B: 그러면 되겠다 ㅋㅋ (That'd be a good idea! lol). In your example, 내면 됩니다 would mean "You can pay it" 여기에 내면 됩니다 = You can pay it here '돈을 넣는 곳에' 내면 됩니다 = You can pay it where you put money in Lastly, for the rephrasing, 청소는 이걸로 해 = 이걸로 청소를 해. = Do the cleaning with this. In my honest opinion, I guess you would probably get confused for this. Actually this is the hardest part where Korean grammar goes little weird. A lot of natives would teach you like 은/는/이/가 are used for the Subject, not a subject the subject for grammar. But as you can clearly see, "차 값은" is not the subject at all in your original sentence right? The ones which stick to 은/는/이/가 sometimes are just the Topic of the sentences. In Korean grammar you have to infer the real subject from the context. If you say "I cut my hair" then it would mean that you cut your own hair yourself. But in Korean "나 머리 잘랐어" would mean "I got my hair cut". You have to guess the real subject (hair designer) from the context. That's why "차 값은" could be the object of the sentence like "차 값을", since it's not the real subject.

Yes,you got it right. "After you have drunk your tea, you can simply pay for it by putting the money into where the money should be put (say the slot,the box or something like that )" 좋은 하루 되세요.