The store bought 400 towels, and planned to sell each towel at 6 yuan. After selling (4/5), the rest will be sold at a 30% discount. How much can these towels cost?
商店购进400条毛巾，计划每条售价6元，卖出(4/5)后，余下的打七折销售，这些毛巾一共可以买多少钱？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">400 * (4/5)</gadget>
<output>320</output>

<gadget id="calculator">320 * 6</gadget>
<output>1_920</output>

<gadget id="calculator">400 - 320</gadget>
<output>80</output>

<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">80 * 6 * (7/10)</gadget>
<output>336</output>

<gadget id="calculator">1_920 + 336</gadget>
<output>2_256</output>

<result>2_256</result>