A ticket for a football game is 80 yuan. After the price is reduced, the audience increases by half and the income increases (1/5), so how much will the price of each ticket be reduced?
足球赛门票80元一张，降价后观众增加了一半，收入增加了(1/5)，则每张门票降价多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">80 * (1/5)</gadget>
<output>16</output>

<gadget id="calculator">80 + 16</gadget>
<output>96</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">96 / (3/2)</gadget>
<output>64</output>

<gadget id="calculator">80 - 64</gadget>
<output>16</output>

<gadget id="calculator">16 / 80</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>