The school wants to build a swimming pool. The length of the swimming pool is 50m, the width is 30m, and the depth is 3m. Now we need to paste tiles around and on the bottom of the swimming pool. If the tiles are 25 yuan per square meter, how much will it cost to tile the swimming pool?
学校要建一个游泳池，这个游泳池的长是50m，宽是30m，深是3m．现要在游泳池的四周和底面贴上瓷砖，如果每平方米瓷砖25元，给这个游泳池贴瓷砖，一共要用多少元？
<gadget id="calculator">50 * 30</gadget>
<output>1_500</output>

<gadget id="calculator">30 * 3 * 2</gadget>
<output>180</output>

<gadget id="calculator">50 * 3 * 2</gadget>
<output>300</output>

<gadget id="calculator">1_500 + 180 + 300</gadget>
<output>1_980</output>

<gadget id="calculator">1_980 * 25</gadget>
<output>49_500</output>

<result>49_500</result>