Use the form below to do your conversion.
Solution
Step1
Log72009=Log(2009) ÷ Log(7)
Log(2009)= 3.3029799367482
Log(7)=0.84509804001426
Log72009=3.3029799367482 ÷ 0.84509804001426
Ans=3.90839852935
Step2
Alternatively, the logarithm can be calculated like this.