Having secured his rear during the previous year, Morosini set his sights upon the Peloponnese, where the Greeks, especially the Maniots, had begun showing signs of revolt and communicated with Morosini, promising to rise up in his aid. Ismail Pasha, the new military commander of the Morea, learned of this and invaded the Mani peninsula with 10,000 men, reinforcing the three forts that the Ottomans already garrisoned, and compelled the Maniots to give up hostages to secure their loyalty. As a result, the Maniots remained uncommitted when, on 25 June 1685, the Venetian army, 8,100 men strong, landed outside the former Venetian fort of Koroni and laid siege to it. The castle surrendered after 49 days, on 11 August, and the garrison was massacred. After this success, Morosini embarked his troops towards the town of Kalamata, in order to encourage the Maniots to revolt. The Venetian army, reinforced by 3,300 Saxons and under the command of general Hannibal von Degenfeld , defeated a Turkish force of ca. 10,000 outside Kalamata on 14 September, and by the end of the month, all of Mani and much of Messenia were under Venetian control.
Question: How many days after the Venetian Army laid siege to the fort of Koroni  were the Turkish forces defeated?
Answer: 81