On average, day students in our school have to walk for 2 hours a day, 4 kilometers per hour. How many kilometers do day students walk on average every day?
我校的走读生平均每天要走2小时，每小时走4千米．走读生平均每天要走多少千米？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>