There is an iron wire, cut off half first, and then cut off 20 cm, and the remaining part can just make an equilateral triangle frame with a side length of 25 cm. How long is this wire in centimeters?
有一根铁丝，先截去一半，再截去20厘米，剩下部分正好可以做一个边长为25厘米的正三角形框架．这根铁丝原来长多少厘米？
<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">75 + 20</gadget>
<output>95</output>

<gadget id="calculator">1 / 2</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">95 / (1/2)</gadget>
<output>190</output>

<result>190</result>