A bus drove from Guangzhou to Shaoguan. After traveling for a while, it was 210 kilometers away from Shaoguan, and then traveled 20% of the whole journey. At this time, the ratio of the distance traveled to the distance not traveled was 3:2. How many kilometers is the distance between Guangzhou and Shaoguan?
一辆大巴从广州开往韶关，行了一段路程后，离韶关还有210千米，接着又行了全程的20%，这时已行路程与未行路程的比是3：2．广州、韶关两地相距多少千米？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</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">(1/5) + (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">210 / (3/5)</gadget>
<output>350</output>

<result>350</result>