swift flies 912.8km in the first 8.5 hours, and then reaches the destination at 160km per hour in the next 4.5 hours. How many kilometers per hour does Kung Pao Swift fly on average?
一只雨燕，前8.5小时飞行912.8km，后4.5小时，每小时飞行160km到达目的地，宫保雨燕全程平均每小时飞行多少千米？
<gadget id="calculator">4.5 * 160</gadget>
<output>720</output>

<gadget id="calculator">912.8 + 720</gadget>
<output>1_632.8</output>

<gadget id="calculator">8.5 + 4.5</gadget>
<output>13</output>

<gadget id="calculator">1_632.8 / 13</gadget>
<output>125.6</output>

<result>125.6</result>