Master Li now only needs 12 minutes to make a part, which is 75% less than before. How many minutes does it take to make a part?
李师傅现在做一个零件只要12分钟，比原来节约了75%．原来做一个零件要多少分钟？
<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">12 / (1/4)</gadget>
<output>48</output>

<result>48</result>