The number of outbound tourists in a certain city was 20,000 in 2012, and reached 24,000 in 2013. How much has it increased?
某市2012年出境旅游人数为20000人次，2013年达到了24000人次，增长了多少．
<gadget id="calculator">24_000 - 20_000</gadget>
<output>4_000</output>

<gadget id="calculator">4_000 / 20_000</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>