triangular piece of land has a base of 20 meters and a height of 60 meters. If 4 saplings can be planted per square meter, how many saplings can be planted at most?
一块三角形地，底是20米，高是60米，如果每平方米可种植树苗4棵，最多可种多少棵树苗？
<gadget id="calculator">60 / 2</gadget>
<output>30</output>

<gadget id="calculator">20 * 30</gadget>
<output>600</output>

<gadget id="calculator">600 * 4</gadget>
<output>2_400</output>

<result>2_400</result>