A classroom with a length of 9 meters, a width of 6 meters, and a height of 4 meters is painted on its roof and walls. After deducting the area of doors and windows of 24 meters**2, what is the area of the classroom that needs to be painted?
一间长9米，宽6米，高4米的教室，粉刷它的屋顶和墙壁，扣除门窗面积24米**2，需要进行粉刷的教室的面积是多少？
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

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

<gadget id="calculator">9 * 4 * 2</gadget>
<output>72</output>

<gadget id="calculator">54 + 48 + 72</gadget>
<output>174</output>

<gadget id="calculator">174 - 24</gadget>
<output>150</output>

<result>150</result>