Mr. Wang rode a bicycle from school to the county seat to do business, and he has traveled the entire distance (2/5). If he walks another 18 kilometers, the ratio of the distance traveled to the remaining distance is 5:3. The distance from the school to the county seat is How many kilometers?
王老师骑车从学校开车到县城办事，已经走了全程的(2/5)，如果再走18千米，已行的路程和剩下路程的比是5：3，学校到县城的路程有多少千米？
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(5/3) * 18</gadget>
<output>30</output>

<gadget id="calculator">18 + 30</gadget>
<output>48</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(5/3) * (3/5)</gadget>
<output>1</output>

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

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">48 / (3/5)</gadget>
<output>80</output>

<result>80</result>