Eight buildings are built on a piece of land with an area of 1.2 hectares. Each building covers an area of 900 square meters. How many hectares are the buildings in total?
在一块面积是1.2公顷的土地上建了8幢楼房，每幢楼房占地900平方米，楼房一共占地多少公顷？
<gadget id="calculator">900 * 8</gadget>
<output>7_200</output>

<result>7_200</result>