50 pieces of clothes are sold at a 20% increase in the purchase price, and the selling price is 84 yuan. After selling 30 pieces, the rest are sold at 85% of the price. How much money can be earned after selling this batch of clothes?
50件衣服，每件按进货价提高20%出售，售价为84元，卖出30件后，余下的按定价的85%出售，售完这批衣服，共可赚多少钱？
<gadget id="calculator">84 * 30</gadget>
<output>2_520</output>

<gadget id="calculator">50 - 30</gadget>
<output>20</output>

<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">84 * (17/20)</gadget>
<output>357/5 = around 71.4</output>

<gadget id="calculator">20 * (357/5)</gadget>
<output>1_428</output>

<gadget id="calculator">2_520 + 1_428</gadget>
<output>3_948</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">84 / (6/5)</gadget>
<output>70</output>

<gadget id="calculator">70 * 50</gadget>
<output>3_500</output>

<gadget id="calculator">3_948 - 3_500</gadget>
<output>448</output>

<result>448</result>