Put 28.8 cubic meters of sandy soil on a rectangular flower bed with a length of 16 meters and a width of 4.5 meters. How thick can it be?
把28.8立方米沙土垫在长16米，宽4.5米的长方形花坛上，可以垫多厚？
<gadget id="calculator">16 * 4.5</gadget>
<output>72</output>

<gadget id="calculator">28.8 / 72</gadget>
<output>0.4</output>

<result>0.4</result>