The area of a classroom is 70.4 square meters, and the floor is paved with square tiles with a side length of 0.8 meters. How many tiles are needed?
一间教室的面积是70.4平方米，用边长是0.8米的正方形瓷砖铺地，需要这种瓷砖多少块？
<gadget id="calculator">0.8 * 0.8</gadget>
<output>0.64</output>

<gadget id="calculator">70.4 / 0.64</gadget>
<output>110</output>

<result>110</result>