There were seven kings of the Romans, starting with Romulus, and they ceased after a period of 244 years.
From the capture of Troy up until Romulus, there were were (?) 431 years.
Altogether, [up until the end of the kings] there were 675 years.
Dionysius of Halicarnassus gives a brief account of the dates of these kings, from Romulus to Tarquinius, around the time of the first Olympiad, as follows [ DionHal_1.75 ].