A passenger car travels from A to B at a speed of 80 km/h, and it will be 480 km away from B in 4 hours. How many kilometers is the total length from A to B?
一车客车从甲地开往乙地，速度是80千米/时，4小时后离乙地还有480千米．甲地到乙地全长多少千米？
<gadget id="calculator">80 * 4</gadget>
<output>320</output>

<gadget id="calculator">320 + 480</gadget>
<output>800</output>

<result>800</result>