A fruit shop buys a batch of fruit, sells 50% of it on the first day, and sells the remaining 30% on the second day. At this time, there are still 35 kilograms that have not been sold. How many kilograms is this batch of fruit in total?
水果店进一批水果，第一天卖了50%，第二天卖了余下的30%，这时还有35千克没有卖．这批水果共有多少千克？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">35 / (7/10) / (1/2)</gadget>
<output>100</output>

<result>100</result>