Use the form below to do your conversion.
Solution
Step1
Log79991=Log(9991) ÷ Log(7)
Log(9991)= 3.9996089589714
Log(7)=0.84509804001426
Log79991=3.9996089589714 ÷ 0.84509804001426
Ans=4.7327159330578
Step2
Alternatively, the logarithm can be calculated like this.