I see a paragraph in a book:
Editors of newspapers and magazines often go to extremes to provide their readers with unimportant facts and statistics. Last year a journalist had been instructed by a well-known magazine to write an article on the president's palace in a new African republic. When the article arrived, the editor read the first sentence and then refused to publish it. The article began: 'Hundreds of steps lead to the high wall which surrounds the president's palace.' The editor at once sent the journalist a fax instructing him to find out the exact number of steps and the height of the wall.
May you tell me why not add the before the last steps?