A swimming pool is 50 meters long, 30 meters wide, and 1.8 meters deep. A layer of cement is spread on the bottom and walls of the pool. What is the area of the cemented part?
一个游泳池长50米，宽30米，深1.8米，在池的底面和四壁上抹上一层水泥，抹水泥部分的面积是多少平方分米？
<gadget id="calculator">50 * 30</gadget>
<output>1_500</output>

<gadget id="calculator">50 * 1.8 * 2</gadget>
<output>180</output>

<gadget id="calculator">30 * 1.8 * 2</gadget>
<output>108</output>

<gadget id="calculator">1_500 + 180 + 108</gadget>
<output>1_788</output>

<gadget id="calculator">1_788 * 100</gadget>
<output>178_800</output>

<result>178_800</result>