Grades 4, 5, and 6 donated to the earthquake-stricken areas. Grade 6 is more than grade 5 (1/5), Grade 5 is more than Grade 4 (1/5), Grade 6 is more than Grade 4 by what percentage?
四、五、六年级为地震灾区捐款，六年级比五年级多(1/5)，五年级比四年级多(1/5)，六年级比四年级多几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) * (6/5)</gadget>
<output>36/25 = around 1.44</output>

<gadget id="calculator">(36/25) - 1</gadget>
<output>11/25 = around 0.44</output>

<result>11/25 = around 0.44</result>