A ticket for a football game is 5 yuan. After the price is reduced, the audience increases by half and the income increases by one-fifth. How much is the price of a ticket reduced?
足球赛门票5元一张，降价后观众增加了一半，收入增加了五分之一，则一张门票降价多少元．
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(6/5) / (3/2)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 * (4/5)</gadget>
<output>4</output>

<gadget id="calculator">5 - 4</gadget>
<output>1</output>

<result>1</result>