Here's how to get there:
1. Move the decimal point to the right until you have a number between 1 and 10. In this case, we move it four places to the right, giving us 3.62.
2. Count the number of places you moved the decimal. Since we moved it four places to the right, the exponent of 10 will be -4.
3. Combine the number and the exponent to get 3.62 x 10⁻⁴.