A factory saved 540 tons of coal from January to March 2001. How many tons of coal is saved on average every day?
一个工厂2001年1-3月节约煤540吨，平均每天节约用煤多少吨？
<gadget id="calculator">31 * 2</gadget>
<output>62</output>

<gadget id="calculator">62 + 28</gadget>
<output>90</output>

<gadget id="calculator">540 / 90</gadget>
<output>6</output>

<result>6</result>