Age of earth :
Age of our universe : 13.8 billion years.
Now assume that this 13 billion years equals to 6 days of equal length.
Therefore how long will 2 days be in this scale? 4.6 billion years.
Find age of the earth : 4.54 billion years. Plus minus 0.05 error.
Matches what we read in Quran that God created the earth in two days, which is out of the six days total He took to create the universe.
https://quran.com/41/9