Answer:
see attached
Explanation:
The exponent will be positive if the most significant digit (left-most non-zero digit) is to the left of the ones number place. Since Aarin has a "really large" number, we assume that is the case.
The exponent of 10 is the number of digits to the right of the most significant digit and before the decimal point.
Example:
2000. has 3 digits between 1 and the decimal point, so the power of 10 is 3.
2000 = 2×10^3