Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Not only did the king in token of gratitude release all his Roman prisoners without ransom, but he felt himself so moved by the generosity of his brave opponents that he offered, by way of personal recompense, a singularly fair and favourable peace. Cineas appears to have gone once more to Rome, and Carthage seems to have been seriously apprehensive that Rome might come to terms. But the senate remained firm, and repeated its former answer. Unless the king was willing to allow Syracuse to fall into the hands of the Carthaginians and to have his grand scheme thereby disconcerted, no other course remained than to abandon his Italian allies and to confine himself for the time being to the occupation of the most important seaports, particularly Tarentum and Locri.
In vain the Lucanians and Samnites conjured him not to desert them; in vain the Tarentines summoned him either to comply with his duty as their general or to give them back their city. The king met their complaints and reproaches with the consolatory assurance that better times were coming, or with abrupt dismissal. Milo remained behind in Tarentum; Alexander, the king's son, in Locri; and Pyrrhus, with his main force, embarked in the spring of 476 at Tarentum for Syracuse.
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Reference address : https://www.ellopos.net/elpenor/rome/2-07-pyrrhus-rome-italy.asp?pg=40