The nearest Black hole is 7800 light years from Earth. Light travels at 186,000 per sec how many miles away is it?

Distance=speed*time

speed of light in miles=3.6 km/hr

7800 light years=7800 (9.4607*10^12) km

thus the distance in miles will be as follows:

1 mile=1.60934

thus the distance from each to black hole is:

[7800 (9.4607*10^12) ]/1.60934

=4.5853244*10^16 miles