A car drives from place A to place B, and travels the whole distance (1/3) in 5 hours. At this time, it is still 450 kilometers away from the destination. How many miles per hour does the car travel on average?
一辆汽车由甲地开往乙地，5小时行了全程的(1/3)，这时离终点还有450千米．这辆汽车平均每小时行多少千米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">450 / (2/3)</gadget>
<output>675</output>

<gadget id="calculator">(1/3) / 5</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">675 * (1/15)</gadget>
<output>45</output>

<result>45</result>