A and B ride bicycles from East Village to West Village at 8:00 a.m. A is 6 kilometers faster than B per hour. At 12:00 noon, A arrives at the West Village and immediately returns to the East Village, and meets B 15 kilometers away from the West Village. How many kilometers are there between the east and west villages?
甲，乙二人上午8时从东村骑车到西村去，甲每小时比乙快6千米．中午12时甲到西村后立即返回东村，在距西村15千米处遇到乙．求东、西两村相距多少千米？
<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15 * (1/3)</gadget>
<output>5</output>

<gadget id="calculator">5 - 4</gadget>
<output>1</output>

<gadget id="calculator">15 / 1</gadget>
<output>15</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<result>60</result>