A wire, after using (3/4) of the wire, there is exactly (3/4)m left. How many meters is this wire long? What is the correct column
一根电线，用了这根电线的(3/4)后，正好还剩下(3/4)m．这根电线长多少米？正确的列式是多少
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/4) / (1/4)</gadget>
<output>3</output>

<result>3</result>