Huaneng Power Plant bought back 22.5 tons of coal and transported it by truck with a load of 4.5 tons. How many times should it be transported at least? (Solution of column equation)
华能电厂买回22.5吨煤，用载重4.5吨的汽车运，至少要运多少次？(列方程解)
<gadget id="calculator">22.5 / 4.5</gadget>
<output>5</output>

<result>5</result>