How many times does Italy fit into lake Ontario?

Your question seems to be based on a misunderstanding of size and geography. Italy is a country located in Europe, and Lake Ontario is a body of water located in North America. Italy's surface area is approximately 301,336 square kilometers (116,346 square miles), while Lake Ontario's surface area is approximately 19,000 square kilometers (7,300 square miles). Therefore, Italy is significantly larger than Lake Ontario, both in terms of land area and water area.