A number increased by 20% is (3/5), find this number.
一个数增加20%后是(3/5)，求这个数．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">20 / 100</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">(3/5) / (6/5)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>