at least two thousand leagues from here

"For heaven's sake, where is that?" asked the marquise.
"An island situated on the other side of the equator, at least two thousand leagues from here," replied the count.
"So much the better. As Villefort observes, it is a great act of folly to have left such a man between Corsica, where he was born, and Naples, of which his brother-in-law is king, and face to face with Italy, the sovereignty of which he coveted for his son."
"Unfortunately," said Villefort, "there are the treaties of 1814, and we cannot molest Napoleon without breaking those compacts."
"Oh, well, we shall find some way out of it," responded M. de Salvieux. "There wasn't any trouble over treaties when it was a question of shooting the poor Duc d'Enghien."
"Well," said the marquise, "it seems probable that, by the aid of the Holy Alliance, we shall be rid of Napoleon; and we must trust to the vigilance of M. de Villefort to purify Marseilles of his partisans. Tbe king is either a king or no king; if he be acknowledged as sovereign of France, he should be upheld in peace and tranquillity; and this can best be effected by employing the most inflexible agents to put down every attempt at conspiracy--'tis the best and surest means of preventing mischief."