A and B are walking towards each other from two places at the same time, and meet at a distance of 40 meters from the midpoint. It is known that A has traveled 55% of the whole journey. How many meters did A travel?
甲乙两人同时从两地相向而行，在距离中点40米处相遇，已知甲行了全程的55%．甲行了多少米？
<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<gadget id="calculator">55 / 100</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">1 - (11/20)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">(11/20) - (9/20)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">80 / (1/10)</gadget>
<output>800</output>

<gadget id="calculator">800 * (11/20)</gadget>
<output>440</output>

<result>440</result>