The construction team had a batch of cement. After 30% of the cement was used up, another 160 bags were shipped in. At this time, the amount of cement was more than the original (1/10). How many bags of original cement?
施工队有一批水泥，用去30%后，又运来160袋，这时的水泥比原来多(1/10)．原来的水泥有多少袋？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

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

<gadget id="calculator">1 + (1/10) + (-7/10)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">160 / (2/5)</gadget>
<output>400</output>

<result>400</result>