Here's how we get that:

1. Move the decimal point to the right until you have a number between 1 and 10. In this case, we move it 7 places to the right.

2. Count the number of places you moved the decimal. This number becomes the exponent of 10. Since we moved it to the right, the exponent is negative.

3. Write the number in the form of a x 10^b, where 'a' is the number between 1 and 10 and 'b' is the exponent.

Therefore, 0.000000185 is equal to 1.85 x 10⁻⁷.