The original price of a TV set is 1600 yuan. Price increase (3/10) followed by price reduction (1/5). How much does a TV sell for now?
一台电视机原价1600元．提价(3/10)后又降价(1/5)．现在电视机卖多少钱一台？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

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

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_600 * (13/10) * (4/5)</gadget>
<output>1_664</output>

<result>1_664</result>