Xiaoqiang and Xiaodong set off from places A and B at the same time and walk toward each other. Xiaoqiang travels 15 kilometers per hour. After the two meet, Xiaoqiang travels another 2 hours to reach point B, and Xiaodong travels another 45 kilometers to reach point A. How many kilometers does Xiaodong travel per hour?
小强和小东同时从甲、乙两地出发，相向而行．小强每小时行15千米，两人相遇后，小强再行2小时到达乙地，小东再走45千米到达甲地，小东每小时行多少千米？
<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<gadget id="calculator">30 / 45</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>

<result>10</result>