batch of fruits sold (1/6) of the total number on the first day, and sold 30 kilograms more on the second day than on the first day, leaving 240 kilograms. How many kilograms are there in this batch of fruits?
一批水果，第一天卖出总数的(1/6)，第二天比第一天多卖出30千克，还剩240千克，这批水果共有多少千克？
<gadget id="calculator">240 + 30</gadget>
<output>270</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6) - (1/6)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">270 / (2/3)</gadget>
<output>405</output>

<result>405</result>