Cong Cong's room is 12 square meters, and there is only a bed in his room that is 1.9 meters long and 1.4 meters wide. How many square meters of open space does his room have?
聪聪的房间面积是12平方米，他的房间只放了一张长1.9米、宽1.4米的床．他的房间还有多少平方米的空地？
<gadget id="calculator">1.9 * 1.4</gadget>
<output>2.66</output>

<gadget id="calculator">12 - 2.66</gadget>
<output>9.34</output>

<result>9.34</result>