A piece of iron wire is cut in half and half. After two cuts, there is still 4.25 meters left. How many meters is the original length of the iron wire?
一根铁丝一半一半地剪，剪了两次后还剩4.25米，这根铁丝原来长多少米．
<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">(1/2) * (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/2) - (1/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4.25 / (1/4)</gadget>
<output>17</output>

<result>17</result>