Put 300 cubic meters of soil on an open space with a length of 50 meters and a width of 30 meters. How thick can it be?
把300立方米的土垫在长50米，宽30米的空地上，可垫多厚？
<gadget id="calculator">50 * 30</gadget>
<output>1_500</output>

<gadget id="calculator">300 / 1_500</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>