A swimming pool is 40 meters long, 25 meters wide, and 3 meters high. The floor and walls should be covered with tiles. How many square meters is the tiled area?
一个游泳池，长40米，宽25米，高3米，要用瓷砖来贴地面和四壁．贴瓷砖的面积是多少平方米？
<gadget id="calculator">40 * 25</gadget>
<output>1_000</output>

<gadget id="calculator">40 * 3 * 2</gadget>
<output>240</output>

<gadget id="calculator">25 * 3 * 2</gadget>
<output>150</output>

<gadget id="calculator">1_000 + 240 + 150</gadget>
<output>1_390</output>

<result>1_390</result>