A needs 8 hours to travel from point A to point B, and B needs 10 hours to travel. If two people, A and B, start from A and B at the same time and walk toward each other, when they meet, how much of the whole journey has been traveled by A?
从A地到B地，甲需8小时行完，乙需10小时行完．如果甲乙两人同时分别从A、B两地出发，相向行走，当他们相遇时，甲行了全程的多少．
<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>9/40 = around 0.225</output>

<gadget id="calculator">1 / (9/40)</gadget>
<output>40/9 = around 4.444444</output>

<gadget id="calculator">(40/9) * (1/8)</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>