A ship sails between two piers. If it takes 8 hours to sail forward and 11 hours to sail against the current, and the known water speed is 3 kilometers per hour, then how many kilometers is the distance between the two piers?
一艘轮船在两码头之间航行，如果顺水航行需8小时如果逆水航行需11小时，已知水速为每小时3千米，那么两码头之间的距离是多少千米？
<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<gadget id="calculator">11 * 3</gadget>
<output>33</output>

<gadget id="calculator">24 + 33</gadget>
<output>57</output>

<gadget id="calculator">11 - 8</gadget>
<output>3</output>

<gadget id="calculator">57 / 3</gadget>
<output>19</output>

<gadget id="calculator">19 + 3</gadget>
<output>22</output>

<gadget id="calculator">8 * 22</gadget>
<output>176</output>

<result>176</result>