The pilot flew at half speed for the first 4 minutes, and at full speed for the next 4 minutes. He flew a total of 80 kilometers in 8 minutes. How many kilometers per hour is the full speed?
飞行员前4分钟用半速飞行，后4分钟用全速飞行，8分钟内共飞行了80千米，全速是每小时多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">4 * (1/2)</gadget>
<output>2</output>

<gadget id="calculator">2 + 4</gadget>
<output>6</output>

<gadget id="calculator">80 / 6</gadget>
<output>40/3 = around 13.333333</output>

<gadget id="calculator">(40/3) * 60</gadget>
<output>800</output>

<result>800</result>