Xiaohua has fewer stamps than Xiaohong (1/5). If Xiaohua adds another 6 stamps, it will be more than Xiaohong's stamps (1/10), how many stamps does Xiaohong have?
小华的邮票张数比小红少(1/5)．如果小华又增加6张邮票就比小红的邮票张数多(1/10)，小红有多少张邮票？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(11/10) - (4/5)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">6 / (3/10)</gadget>
<output>20</output>

<result>20</result>