store buys 600 ballpoint pens with a cost of 0.4 yuan each, and sets the price at a profit of 50%. When 80% of the pens are sold, the rest is sold at 30% off the selling price. How much profit does the store make in total?
一个商店购进每支成本为0.4元的圆珠笔600支，按获利50%定价，当出售了80%后，剩下的按照售价的七折出售，这个商店共获利多少钱？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">600 * (4/5)</gadget>
<output>480</output>

<gadget id="calculator">0.4 * (3/2) * 480</gadget>
<output>288</output>

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

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">0.4 * (3/2) * (7/10) * 600 * (1/5)</gadget>
<output>50.4</output>

<gadget id="calculator">0.4 * 600</gadget>
<output>240</output>

<gadget id="calculator">50.4 - 240</gadget>
<output>-189.6</output>

<gadget id="calculator">288 + (-189.6)</gadget>
<output>98.4</output>

<result>98.4</result>