In the spring sports meeting, the sixth-grade Young Pioneers prepared 10 kilograms of sugar water for the students. The ratio of sugar to water was 1:26. Due to the hot weather, 52 kilograms of water were added first. How many kilograms of sugar should be added to maintain the original concentration?
春季运动会上，六年级少先队为同学们准备了10千克糖水，其中糖和水的比是1：26，因天气炎热需加量，先补充了52千克水．再加多少千克糖，才能保持原来的浓度？
<gadget id="calculator">52 / 26</gadget>
<output>2</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<result>2</result>