A triangular wheat field has a base of 20 meters and a height of 30 meters. If 600 grams of wheat are harvested per square meter, how many kilograms of wheat are harvested in this wheat field?
一块三角形麦地，底是20米，高是30米．如果每平方米收小麦600克，这块麦地一共收小麦多少千克？
<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">600 / 1_000</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">20 * 15 * (3/5)</gadget>
<output>180</output>

<result>180</result>