Read it through once

The number of souls in this kingdom being usually reckoned one million and a half, of these I calculate there may be about two hundred thousand couple whose wives are breeders; from which number I subtract thirty thousand couple, who are able to maintain their own children, (although I apprehend there cannot be so many,) and from the remaining one hundred and seventy thousand I say, there may be computed two hundred thousand children, of whom I calculate that one hundred and forty thousand may be reserved for breeding, whereof there will be eighty thousand males destined for food, and sixty thousand females kept for breeding, which will produce, at an average, thirty thousand meat children yearly, besides those more tender and delicate, which will be reserved for the table of great men.