How many GB is 7475 MB

A GB is 1000MB. Therefore 7475MB is 7.475GB.

Here is the scientific notation.

10e12 = TB (Terabyte)
10e9 = GB (Gigabyte)
10e6 = MB (Megabyte)
10e3 = KB (Kilobyte)

*Note: e is equivalent to Exponent of (number).