total of 23 members of a representative team participated in the 16th Guangzhou Asian Games. They were arranged in descending order of height. The average height of the top 5 players was 3 cm higher than the average height of the first 8 players; the average height of the last 15 players was The average height of the last 18 players is 0.5 cm less. Then the average height of the first 8 players is how many centimeters greater than the average height of the last 15 players.
某代表队共有23人参加第16届广州亚运会，他们按身高从高到低排列，前5位队员的平均身高比前8位队员的平均身高多3厘米；后15位队员的平均身高比后18位队员的平均身高少0.5厘米．那么前8位队员的平均身高比后15位队员的平均身高多多少厘米．
<gadget id="calculator">3 / 3</gadget>
<output>1</output>

<gadget id="calculator">1 * 8</gadget>
<output>8</output>

<gadget id="calculator">0.5 / 3</gadget>
<output>0.166667</output>

<gadget id="calculator">0.166667 * 18</gadget>
<output>3.000006</output>

<gadget id="calculator">8 - 3.000006</gadget>
<output>4.999994</output>

<gadget id="calculator">4.999994 + 3.000006</gadget>
<output>8</output>

<result>8</result>