Fangfang's bedroom is paved with 60 floor tiles with a side length of 40 cm. What is the area of this bedroom in about square meters?
方方的卧室铺了60块边长为40厘米的地砖，这间卧室面积约多少平方米．
<gadget id="calculator">0.4 * 0.4</gadget>
<output>0.16</output>

<gadget id="calculator">0.16 * 60</gadget>
<output>9.6</output>

<result>9.6</result>