A kind of tea is priced at 500 yuan per 500 grams. During the May 1st period, there will be promotional activities, and 0.05 kilograms will be given away for every 500 grams purchased. Teacher Wang bought these teas for 1,000 yuan. How many kilograms of tea did he actually buy back?
一种茶叶每500克售价500元，五•一期间搞促销活动，每购买500克赠送0.05千克，王老师买这各茶叶用了1000元，他实际买回茶叶多少千克？
<gadget id="calculator">500 / 500</gadget>
<output>1</output>

<gadget id="calculator">1_000 / 1 / 1_000</gadget>
<output>1</output>

<gadget id="calculator">1_000 / 500</gadget>
<output>2</output>

<gadget id="calculator">2 * 0.05</gadget>
<output>0.1</output>

<gadget id="calculator">1 + 0.1</gadget>
<output>1.1</output>

<result>1.1</result>