Use the form below to do your conversion.
Solution
Step1
Log89991=Log(9991) ÷ Log(8)
Log(9991)= 3.9996089589714
Log(8)=0.90308998699194
Log89991=3.9996089589714 ÷ 0.90308998699194
Ans=4.4288044564568
Step2
Alternatively, the logarithm can be calculated like this.