It only took 2 hours for Uncle Zhang to send the TV from the urban area to Chencun. The distance traveled in the first hour (5/8) was 18 kilometers less. The ratio of the distance traveled in the second hour to the first hour was 3:2. How many kilometers is it from the urban area to Chencun?
张叔叔从市区送电视到陈村只用了2小时，第一小时行了全程的(5/8)少18千米，第二小时行的路程和第一小时的比是3：2．市区到陈村有多少千米？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

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

<gadget id="calculator">(5/8) - (2/5)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">18 / (9/40)</gadget>
<output>80</output>

<result>80</result>