A rectangular paddy field with a length of 60 meters and a width of 35 meters has a total of 4,200 kilograms of rice harvested. How many kilograms of rice are harvested per square meter on average?
一块长60米、宽35米的长方形稻田，共收稻谷4200千克，平均每平方米收稻谷多少千克？
<gadget id="calculator">60 * 35</gadget>
<output>2_100</output>

<gadget id="calculator">4_200 / 2_100</gadget>
<output>2</output>

<result>2</result>