The speed of light in a vacuum is approximately 186,282 miles per second. To convert this speed into miles per hour, we need to multiply by the number of seconds in an hour, which is 3,600 seconds.
So, if we do the math: 186,282 miles/second × 3,600 seconds/hour = 669,600,000 miles per hour.
In summary, the speed of light is about 669,600,000 miles per hour. This incredible speed means that light can travel around the Earth about 7.5 times in just one second!