group of children divide a pile of candy, the first child took away 1 yuan, the second child took 2 yuan, the third child took 3 yuan... and so on, this group of children just took away the candy, If distributed equally, each child can get 10 pieces of candy. How many candies are there in total?
一群小朋友分一堆糖，第一个小朋友拿走了1块，第二个小朋友拿走了2块，第三个小朋友拿走了3块…依此类推，这群小朋友刚好把糖拿完，如果平均分配，每个小朋友可拿10块糖．这堆糖共有多少块？
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">20 - 1</gadget>
<output>19</output>

<gadget id="calculator">1 + 19</gadget>
<output>20</output>

<gadget id="calculator">19 / 2</gadget>
<output>19/2 = around 9.5</output>

<gadget id="calculator">20 * (19/2)</gadget>
<output>190</output>

<result>190</result>