1. A farmer grows rice and sells 1 kg of paddy to a miller for 3 thousand dong. The miller grinds the paddy Into rice and sells the rice to the rice cake maker for 4 thousand dong. The person making the rice paper milied the rice into flour and coated it with rice paper, then sold it to an engineer for 5 thousand dong. That engineer eats rice paper. How much added value does each person In this chain of transactions create? What is GDP in this case