A bedroom is 8 meters long, 6 meters wide, and 3 meters high. The walls and roof need to be painted (3.5 square meters excluding doors and windows). What is the area to be painted?
一间卧室长8米，宽6米，高3米，要粉刷四壁和房顶(除去门窗面积3.5平方米)，求要粉刷的面积是多少？
<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<gadget id="calculator">8 * 3 * 2</gadget>
<output>48</output>

<gadget id="calculator">6 * 3 * 2</gadget>
<output>36</output>

<gadget id="calculator">36 - 3.5</gadget>
<output>32.5</output>

<gadget id="calculator">48 + 48 + 32.5</gadget>
<output>128.5</output>

<result>128.5</result>