Xiao Ming and his father went to the Computer City to buy a computer, and they saw a computer with a price tag of 8,000 yuan. Xiaoming's father said to the manager: "Can I get a 20% discount?" The manager thought for a while and said: "Add 5% to the price you said," and the deal is done. How much did Xiao Ming's family spend on this computer?
小明与爸爸到电脑城去买电脑，他们看到了一台标价8000元的电脑．小明爸爸对经理说："打八折可以吗？"，经理想了想，说："你说的价格，再加5%，"就成交了．请问小明家买这台电脑花了多少钱？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 + (1/20)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">8_000 * (4/5) * (21/20)</gadget>
<output>6_720</output>

<result>6_720</result>