Cars A and B drive from two places AB at the same time. When they meet, they are 20 kilometers away from the midpoint. The speed of car A is 80% of that of car B. When car B arrives at point A, how many kilometers has car A traveled?
甲乙两车从AB两地同时开出，相遇时距中点20千米，甲车速度是乙车的80%，当乙车到达A地时，甲车行了多少千米．
<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(5/9) - (4/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">40 / (1/9)</gadget>
<output>360</output>

<gadget id="calculator">360 * (4/9)</gadget>
<output>160</output>

<result>160</result>