Who could suppose that David, the friend of Marat, was preparing the dwelling of a future emperor by placing the bust of Caesar's murderer in the gallery of the Tuileries?
No one did suppose, nor even suspect it.
When Bonaparte went to see if the bust were properly placed, he noticed the havoc committed in the palace of Catherine of Medicis.

The Tuileries were no longer the abode of kings, it is true, but they were a national palace, and the nation could not allow one of its palaces to become dilapidated.

Bonaparte sent for citizen Lecomte, the architect, and ordered him to _clean_ the Tuileries.

The word might be taken in both senses--moral and physical.
The architect was requested to send in an estimate of the cost of the cleaning.

It amounted to five hundred thousand francs.