Since this is a decimal number, we're gonna do it this way:
=> 0.0008235 in scientific notation
=> Formula = a * 10^n
=> 8.235 * 10^n
Let's count the 0s from the left side of the numbers and going to the decimal point.
There are 3 0s so, we're gonna move 3 to the left
=> 8.235 * 10^-3.
Negative because it is a decimal number.