and B are walking toward each other from A and B at the same time. A walks 5 kilometers every hour. After the two meet, B walks another 10 kilometers to A, and A walks 1.6 hours to B. How many kilometers does B walk per hour?
甲、乙同时从A、B两地相向走来．甲每时走5千米，两人相遇后，乙再走10千米到A地，甲再走1.6时到B地．乙每时走多少千米？
<gadget id="calculator">5 * 1.6</gadget>
<output>8</output>

<gadget id="calculator">10 / 5</gadget>
<output>2</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<result>4</result>