The distance between A and B is 30 kilometers. A, B, and C start from A to B at the same time (their speed remains unchanged). When A arrives at B, B and C leave B. There are still 5 kilometers and 6 kilometers left respectively. When B arrives at B, how many kilometers will C be away from B?
甲乙两地相距30千米，A，B，C三人同时从甲地出发走往乙地，(他们的随度保持不变)，当A到达乙地时，B，C两人离乙地分别还有5千米和6千米，当B到达乙地时，C离乙地还有多少千米．
<gadget id="calculator">30 * 30</gadget>
<output>900</output>

<gadget id="calculator">30 * 6</gadget>
<output>180</output>

<gadget id="calculator">900 - 180</gadget>
<output>720</output>

<gadget id="calculator">30 - 5</gadget>
<output>25</output>

<gadget id="calculator">720 / 25</gadget>
<output>144/5 = around 28.8</output>

<gadget id="calculator">30 - (144/5)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>