Use the form below to do your conversion.
Solution
Step1
Log217685=Log(7685) ÷ Log(21)
Log(7685)= 3.8856438718358
Log(21)=1.3222192947339
Log217685=3.8856438718358 ÷ 1.3222192947339
Ans=2.938728762552
Step2
Alternatively, the logarithm can be calculated like this.