A car drives from place A to place B with a total length of 120 kilometers. It has traveled 3/4 of the full length. How many kilometers are left?
一辆汽车从甲地开往乙地，全长共120千米，已经行了全长的(3/4)，还剩下多少千米？
<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">120 * (1/4)</gadget>
<output>30</output>

<result>30</result>