I'm not an economist, very much not, but I did, quite literally, a back of the envelope calculation -- (Laughter) -- and it seems that for a cubic meter of concrete we would have to pay in the region of 90 dollars.
Não sou economista, mesmo nada, mas fiz, literalmente, uns cálculos  nas costas de um envelope... (Risos) ... e parece que, para 1 m3 de betão, teríamos de pagar  à volta de 90 dólares.