The original price of a movie ticket is several yuan each, but now each ticket is sold at a reduced price of 3 yuan, the audience increases by half, and the income increases by a quarter. What is the original price of a movie ticket?
电影票原价每张若干元，现在每张降低3元出售，观众增加一半，收入增加四分之一，一张电影票原价多少元．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">3 + (3/2)</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/2) - 1 - (1/4)</gadget>
<output>-3/4 = around -0.75</output>

<gadget id="calculator">1 + (-3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(9/2) / (1/4)</gadget>
<output>18</output>

<result>18</result>