Mom bought back some jelly and gave them to the two brothers. The younger brother counted the number of jelly and the ratio of the number of jelly between him and the elder brother was 9:11. The ratio is 2:3. Classmates, if two people share the same amount, how much should each person get?
妈妈买回一些果冻分给了哥俩，弟弟一数，他与哥哥果冻个数的比9﹕11，妈妈随手就从哥哥那儿拿了6个给他，可哥哥一数，他与弟弟个数的比却是2﹕3．同学们，如果两人分一样多，每人应分得几个呢？
<gadget id="calculator">9 + 11</gadget>
<output>20</output>

<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(11/20) - (2/5)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">6 / (3/20) / 2</gadget>
<output>20</output>

<result>20</result>