A person rides a bicycle from point A to point B. He has completed the journey (2/5) in the first 20 minutes. Then he speeds up and walks 60 meters more per minute than before. After walking for another 15 minutes, he is still far away from point B. 1.8 kilometers, how many kilometers is the distance between A and B?
某人骑自行车从甲地到乙地，前20分钟走完全程的(2/5)，然后他加快速度，每分钟比原来多走60米，又走了15分钟后，离乙地还有1.8千米，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>