A car travels from point A to point B at 58 kilometers per hour for the first 3 hours, and a total of 312 kilometers for the next 5 hours. How many miles per hour does the car travel on average?
一辆汽车从A地到B地，前3小时每小时行58千米，后5小时共行312千米．这辆汽车平均每小时行多少千米？
<gadget id="calculator">58 * 3</gadget>
<output>174</output>

<gadget id="calculator">174 + 312</gadget>
<output>486</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">486 / 8</gadget>
<output>243/4 = around 60.75</output>

<result>243/4 = around 60.75</result>