There is a batch of cement in the warehouse, 28% of the total is shipped out for the first time, and 110 packages are shipped out for the second time. At this time, there is still half of the original cement in the warehouse. How many bags of cement were there in total in the warehouse?
仓库里有一批水泥，第一次运出总数的28%，第二次又运出110包，这时仓库里水泥还有原来的一半．原来仓库里一共有多少包水泥？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">28 / 100</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">1 - (1/2) - (7/25)</gadget>
<output>11/50 = around 0.22</output>

<gadget id="calculator">110 / (11/50)</gadget>
<output>500</output>

<result>500</result>