A classroom is 10 meters long, 6 meters wide, and 4 meters high. Excluding the doors and windows, the area is 18 square meters. Now it is necessary to paint the surroundings and the roof of the classroom. How many square meters is the area to be painted?
一间教室长10米，宽6米，高4米，除去门窗面积18平方米，现要粉刷教室的四周和房顶，要粉刷的面积是多少平方米？
<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">10 * 4 * 2</gadget>
<output>80</output>

<gadget id="calculator">6 * 4 * 2</gadget>
<output>48</output>

<gadget id="calculator">60 + 80 + 48</gadget>
<output>188</output>

<gadget id="calculator">188 - 18</gadget>
<output>170</output>

<result>170</result>