An archeologist finds an ancient fire pit containing partially consumed firewood, and the carbon-14 content of the wood is only 13 % that of an equal carbon sample from a present-day tree. What is the age in years of the ancient site? Your answer should be in the form of N x 10⁴ years. Enter only the number N with two decimal places, do not enter unit.

Carbon-14 has a half-life of 5 730 years