When submitting an answer like 3540000000, you can type it in as is or using scientific notation like 3.54e9. If your answer is 0.00000542, you can also type it in like 5.42e-6.

Numerical answers must be typed to the most accurate value.
Numerical answers within 3% of the actual answer are counted as correct.
To avoid rounding errors in calculations, use at least three (3) significant figures for numerical answers.