A rectangular container has a bottom area of 5d㎡ measured from the inside. Pour 6L of water into the container, and then put a ball into the water. At this time, the water depth in the container is measured to be 1.5dm. What is the volume of the ball? ?
一个长方形容器，从里面量底面积为5d㎡，往容器中倒入6L的水，再把一个圆球深入水中，这时量得容器内的水深为1.5dm，求这个圆球的体积是多少？
<gadget id="calculator">5 * 1.5</gadget>
<output>7.5</output>

<gadget id="calculator">7.5 - 6</gadget>
<output>1.5</output>

<result>1.5</result>