Suning Appliance intends to sell 480 TV sets. 160 units were sold on the first day, and the rest were sold on the second day (9/16). How many fewer units were sold on the first day than on the second day?
苏宁电器打算销售电视机480台．第一天卖出160台，第二天又卖出剩下的(9/16)．第一天比第二天少卖出多少台？
<gadget id="calculator">480 - 160</gadget>
<output>320</output>

<gadget id="calculator">9 / 16</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">320 * (9/16)</gadget>
<output>180</output>

<gadget id="calculator">180 - 160</gadget>
<output>20</output>

<result>20</result>