Put two lines with the same number of ○. The first time moves 1 ○ from the first row to the second row, the second time moves 3 ○s from the second row to the first row, and the third time moves 5 ○s from the first row to the second row. At this time, how many ○ is the difference between the two lines?
摆两行同样多的○．第一次从第一行移动1个○到第二行，第二次从第二行移动3个到第一行，第三次从第一行移动5个○到第二行．这时两行相差多少个○．
<gadget id="calculator">1 + 5</gadget>
<output>6</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">12 - 6</gadget>
<output>6</output>

<result>6</result>