A batch of wax gourds is sold for 100 kilograms, and the ratio of the sold to the remaining is 5:8. How many kilograms is this batch of wax gourds?
一批冬瓜，卖出100千克，卖出的与剩下的比是5：8．这批冬瓜共多少千克？
<gadget id="calculator">5 + 8</gadget>
<output>13</output>

<gadget id="calculator">5 / 13</gadget>
<output>5/13 = around 0.384615</output>

<gadget id="calculator">100 / (5/13)</gadget>
<output>260</output>

<result>260</result>