Xiaogang’s home is paved with floor tiles. The area of each floor tile is 0.45 square meters. There are 100 such floor tiles in the living room. How many square meters is the area of the living room?
小刚家用地板砖铺地，每块地板砖的面积是0.45平方米，客厅用了100块这样的地板砖，客厅的面积是多少平方米？
<gadget id="calculator">100 * 0.45</gadget>
<output>45</output>

<result>45</result>