The new teaching building of Hope School has 4 floors, each floor has 10 classrooms, each classroom is 9m long, 8m wide, and 3m high. It is known that the area of doors, windows, and blackboards in each classroom is 24m**2, and the cost of environmentally friendly paint is 25 yuan/m**2. How much is it estimated to cost to paint these classrooms?
希望学校新建的教学楼共4层，每层10间教室，每间教室长9m，宽8m，高3m，现将每间教室的四周和顶面粉刷环保油漆．已知每间教室门窗、黑板面积共24m**2，环保油漆的造价为25元/m**2，粉刷这些教室预计需要多少元？
<gadget id="calculator">9 * 8</gadget>
<output>72</output>

<gadget id="calculator">9 * 3 * 2</gadget>
<output>54</output>

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

<gadget id="calculator">48 - 24</gadget>
<output>24</output>

<gadget id="calculator">72 + 54 + 24</gadget>
<output>150</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<gadget id="calculator">150 * 25 * 40</gadget>
<output>150_000</output>

<result>150_000</result>