In the recent stock transactions in my country, every time you buy or sell a stock, you must pay stamp duty and commission (i.e. handling fee) according to 0.2% and 0.35% of the transaction value respectively. Mr. He bought it at a price of 10 yuan per share Buy 500 shares of a certain stock. After a month, the price of this stock has risen, and Mr. He sold all of them at a price of 12 yuan per share. How much money did Mr. He earn in this batch of stock trading?
在日前我国的股票交易中，每买进或卖出一种股票，都必须按照成交金额的0.2%和0.35%分别缴纳印花税和佣金(即手续费)，何先生以每股10元的价格买进500股某种股票，过了一个月这种股票价格上扬，何先生以每股12元的价格全部卖出．何先生在这批股票买卖中一共赚了多少钱？
<gadget id="calculator">500 * 12</gadget>
<output>6_000</output>

<gadget id="calculator">0.2 / 100</gadget>
<output>0.002</output>

<gadget id="calculator">0.35 / 100</gadget>
<output>0.0035</output>

<gadget id="calculator">0.002 + 0.0035</gadget>
<output>0.0055</output>

<gadget id="calculator">500 * 12 * 0.0055</gadget>
<output>33</output>

<gadget id="calculator">6_000 - 33</gadget>
<output>5_967</output>

<gadget id="calculator">500 * 10</gadget>
<output>5_000</output>

<gadget id="calculator">500 * 10 * 0.0055</gadget>
<output>27.5</output>

<gadget id="calculator">5_000 + 27.5</gadget>
<output>5_027.5</output>

<gadget id="calculator">5_967 - 5_027.5</gadget>
<output>939.5</output>

<result>939.5</result>