The floor of Ding Ding's living room is paved with 80 square floor tiles with a side length of 5 decimeters. What is the area of this living room?
丁丁家客厅的地面铺了80块边长为5分米的正方形地砖，这个客厅的面积是多大？
<gadget id="calculator">5 * 5 * 80</gadget>
<output>2_000</output>

<result>2_000</result>