A classroom is 9m long, 6m wide, and 3m high. Use paint to paint the four walls and the ceiling, deduct the area of doors and windows of 20m**2, how many square meters is the area to be painted?
一间教室长为9m、宽为6m、高为3m．用涂料粉刷四壁和天花板，扣除门窗的面积20m**2，要粉刷的面积是多少平方米？
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">27 + 18</gadget>
<output>45</output>

<gadget id="calculator">45 * 2</gadget>
<output>90</output>

<gadget id="calculator">90 - 20</gadget>
<output>70</output>

<gadget id="calculator">54 + 70</gadget>
<output>124</output>

<result>124</result>