A person rides a bicycle from place A to place B. He plans to travel (1/10) of the whole journey in one hour. It actually takes 8 hours. How much is the actual speed higher than the plan?
某人骑自行车从甲地到乙地，计划每小时行全程的(1/10)，实际用了8小时，实际速度比计划提高了多少
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/8) - (1/10)</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">(1/40) / (1/10)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>