A rectangular wheat field with a length of 120 meters and a width of 35 meters. A total of 4,200 kilograms of wheat is harvested. How many kilograms of wheat are harvested on average per square meter?
一块长120米，宽35米的长方形麦地．共收小麦4200千克，平均每平方米收小麦多少千克？
<gadget id="calculator">120 * 35</gadget>
<output>4_200</output>

<gadget id="calculator">4_200 / 4_200</gadget>
<output>1</output>

<result>1</result>