1.989 x 10^33
Here's how we get that:
* Move the decimal: Start with the number and move the decimal point to the left until there's only one non-zero digit to the left of the decimal. In this case, we move it 33 places to the left.
* Exponent: The number of places you moved the decimal becomes the exponent of 10. Since we moved it 33 places, the exponent is 33.
* Combine: The result is 1.989 x 10^33