A fountain is to be built in the central square. During the construction, a cuboid earth pit with a length of 15 meters, a width of 7 meters and a depth of 5 meters must be dug. How many cubic meters of soil should be excavated? (In engineering, 1m**3 soil, sand, stone, etc. are referred to as "1 square")
中心广场要建一个喷水池，施工时要挖长15米，宽7米，深5米的长方体土坑，挖出多少方的土？(在工程上，1m**3的土、沙、石等均简称"1方")
<gadget id="calculator">15 * 7 * 5</gadget>
<output>525</output>

<result>525</result>