The classroom is 10 meters long, 5 meters wide, and 4 meters high. Paint its four walls and ceiling, deduct the door and window area of 25 square meters, how many square meters is the painted area?
教室长10米，宽5米，高4米．粉刷它的四壁和天花板，扣除门窗面积25平方米，粉刷面积是多少平方米？
<gadget id="calculator">10 * 5</gadget>
<output>50</output>

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

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">40 + 20</gadget>
<output>60</output>

<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<gadget id="calculator">120 - 25</gadget>
<output>95</output>

<gadget id="calculator">50 + 95</gadget>
<output>145</output>

<result>145</result>