A rectangular parallelepiped of steel is 3m long and its base is a square with side length 5cm. What is the volume of this bar in cubic centimeters?
一根长方体钢材，长3m，底面是边长为5cm的正方形．这根钢材的体积是多少立方厘米？
<gadget id="calculator">3 * 100</gadget>
<output>300</output>

<gadget id="calculator">5 * 5 * 300</gadget>
<output>7_500</output>

<result>7_500</result>