What are you willing to give for me?

In the human body, weighing 70 kg, - 45.5 kg of oxygen, 12.6 kg of carbon, 7 kg of hydrogen, 2.1 kg of nitrogen, 1.4 kg of calcium, 700 g of phosphorus. All the other elements, together (mainly potassium, sulfur, sodium, chlorine, magnesium, iron and zinc), - about 700 g.

He: But I’m not going to buy and I’m willing to give you two dollars!