"Mummy did you like the mandarin I gave you this morning?
- Yes Eloïse, thank you, it was very nice.
- Mummy can you give me a present? Because I gave you a mandarin.
- Excuse me, you don't give a present because you want something in return, you give presents because you love someone.
- But you love me, so you have to give me a present!"
Considering she gave me *one* mandarin segment and wanted a $15 toy, the love we have for each other better not be quantified this way.
