From A to B, Xiao Li walked the whole journey (2/5) in 20 minutes, then accelerated, and traveled 60m more per minute than before. After 15 minutes, there is still 1800m away from place B. Ask: How many kilometers are there between places A and B?
小李从甲到乙，先用20分钟行了全程的(2/5)，然后加速，每分钟比原来多行了60m．15分钟后离乙地还有1800m，求：甲乙两地相距多少千米？
<gadget id="calculator">0.06 * 15</gadget>
<output>0.9</output>

<gadget id="calculator">0.9 + 1.8</gadget>
<output>2.7</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(2/5) * (1/20) * 15</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (2/5) - (3/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">2.7 / (3/10)</gadget>
<output>9</output>

<result>9</result>