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
To procure a wider approach, Scipio gave orders to set fire to the captured streets and to level the ruins; on which occasion a number of persons unable to fight, who were concealed in the houses, miserably perished. Then at last the remnant of the population, crowded together in the citadel, besought for mercy. Bare life was conceded to them, and they appeared before the victor, 30,000 men and 25,000 women, not the tenth part of the former population. The Roman deserters alone, 900 in number, and the general Hasdrubal with his wife and his two children had thrown themselves into the temple of the God of Healing; for them--for soldiers who had deserted their posts, and for the murderer of the Roman prisoners--there were no terms.
But when, yielding to famine, the most resolute of them set fire to the temple, Hasdrubal could not endure to face death; alone he ran forth to the victor and falling upon his knees pleaded for his life. It was granted; but, when his wife who with her children was among the rest on the roof of the temple saw him at the feet of Scipio, her proud heart swelled at this disgrace brought on her dear perishing home, and, with bitter words bidding her husband be careful to save his life, she plunged first her sons and then herself into the flames. The struggle was at an end.
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Reference address : https://www.ellopos.net/elpenor/rome/4-01-gracchi.asp?pg=63