A cultural square covers an area of 2 hectares, and now square marble tiles with a side length of 0.8m are used to cover the ground. If you are in charge of this project, how many such floor tiles do you need to go to the market to buy?
一个文化广场的占地面积是2公顷，现在要用边长0.8m的正方形大理石砖铺满地面．假如你来负责这项工程，你需要去市场买多少块这样的地砖呢？
<result>3_125</result>