I don't understand, you want me to write you a whole paragraph?
I believe that the closest synonym for the word overwhelmed is awestruck. It isn't jubilant, because that means happy. And overwhelmed isn't necessarily happy, it is just a strong emotion. Flattered and gracious just don't fit here.
If I understand what you’re asking, it should be how much milk do you drink, how many people live in Athens, how many times do you go to the park, how much are these boots, how much money do you spend.