A triangular piece of land has a base of 40 meters and a height of 150 decimeters. If 5 kilograms of beans are harvested per square meter, how many kilograms of beans can be harvested in this land?
一块三角形地，底边40米，高是150分米，如果每平方米收豆角5千克，这块地可以收豆角多少千克？
<gadget id="calculator">150 / 10</gadget>
<output>15</output>

<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">40 * (15/2) * 5</gadget>
<output>1_500</output>

<result>1_500</result>