There are 150 tons of goods in a certain warehouse, and 75 tons are transported in 3 days. According to this calculation, how many days will it take to transport the goods? (Solve with ratio)
某仓库有150吨货物，3天运走了75吨，照这样计算，运完这批货物还要几天？(用比例解)
<gadget id="calculator">150 - 75</gadget>
<output>75</output>

<gadget id="calculator">75 / 3</gadget>
<output>25</output>

<gadget id="calculator">75 / 25</gadget>
<output>3</output>

<result>3</result>