There are 16 cubic meters of sand, and it needs to be placed in a sand pit with a length of 8 meters and a width of 2.5 meters. What is the thickness of the cushion?
有沙16立方米，要垫在长8米、宽2.5米的沙坑里，可以垫的厚度是多少．
<gadget id="calculator">8 * 2.5</gadget>
<output>20</output>

<gadget id="calculator">16 / 20</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>