Use the form below to do your conversion.
Solution
Step1
Log128515=Log(8515) ÷ Log(12)
Log(8515)= 3.9301846522986
Log(12)=1.0791812460476
Log128515=3.9301846522986 ÷ 1.0791812460476
Ans=3.64182074762
Step2
Alternatively, the logarithm can be calculated like this.