A triangular corn field has a base of 60 meters and a height of 30 meters, and a total of 1170 kg of corn is harvested. On average, how many kilograms of corn are collected per m**2?
一块三角形的玉米地，底是60米，高是30米，共收玉米1170千克．平均每米**2收玉米多少千克？
<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">60 * 15</gadget>
<output>900</output>

<gadget id="calculator">1_170 / 900</gadget>
<output>13/10 = around 1.3</output>

<result>13/10 = around 1.3</result>