A wire uses 20 meters, and the rest is 5 meters longer than the original 75%, how many meters is this wire?
一根电线，用去20米，剩下的比原来的75%多5米，这根电线长多少米？
<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">75 / 100</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">25 / (1/4)</gadget>
<output>100</output>

<result>100</result>