The distance between A and B is 180km. A car travels from A to B in the morning (1/4) and in the afternoon (1/3). How many kilometers is there to B?
甲乙两地相距180km，一辆汽车从甲地开往乙地，上午行驶了全程的(1/4)，下午行驶了全程的(1/3)，距离乙地还有多少km？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/4) - (1/3)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">180 * (5/12)</gadget>
<output>75</output>

<result>75</result>