The train travels 80 kilometers per hour, which is slower (7/8) than the speed of the plane. How many kilometers per hour does the plane travel?
火车每小时行80千米，比飞机的速度慢(7/8)，飞机每小时行多少千米？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 - (7/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">80 / (1/8)</gadget>
<output>640</output>

<result>640</result>