A car is going to rush to the disaster area at a speed of 47.6 kilometers per hour to participate in the rescue, so that it can reach the disaster area in 8 hours. Now it is necessary to arrive at the disaster area within 7 hours after receiving the order from the upper district, so this car must drive at least a few kilometers per hour to reach the disaster area within the specified time?
一辆汽车准备以每小时47.6千米的速度赶往灾区参加救援，这样8小时可以到达灾区．现接上区命令必须在7小时内到达灾区，那么这辆汽车最少以每小时几千米的速度行驶，才能在规定时间内到达灾区？
<gadget id="calculator">8 / 7</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">47.6 * (8/7)</gadget>
<output>54.4</output>

<result>54.4</result>