To build a road, engineering team A has repaired (3/8), and engineering team B has repaired (1/4), and there are 12 kilometers left to be repaired. How many kilometers is this road?
修一条公路，甲工程队修了(3/8)，乙工程队修了(1/4)，还剩12千米没有修．这条公路长多少千米？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (3/8) - (1/4)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">12 / (3/8)</gadget>
<output>32</output>

<result>32</result>