For a batch of goods, the ratio of the number of tons shipped to the rest is 4:5, and the remaining 125 tons, how many tons have been shipped?
一批货物，运出的吨数与剩下的比是4：5，剩下125吨，运出了多少吨？
<gadget id="calculator">125 / 5</gadget>
<output>25</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<result>100</result>