There is a rectangle with a height of 6 cm. If its length is reduced by 5 cm, its volume will be reduced by 240 cubic centimeters; if its width is reduced by 2 cm, its volume will be reduced by 180 cubic centimeters. What is the volume of the original rectangle?
有一个高为6厘米的长方形，如果将它的长减少5厘米，它的体积就减少240立方厘米；如果将它的宽减少2厘米，它的体积就减少180立方厘米．原来长方形的体积是多少？
<gadget id="calculator">180 / 2 / 6</gadget>
<output>15</output>

<gadget id="calculator">240 / 5 / 6</gadget>
<output>8</output>

<gadget id="calculator">15 * 6 * 8</gadget>
<output>720</output>

<result>720</result>