Use the form below to do your conversion.
Solution
Step1
Log218689=Log(8689) ÷ Log(21)
Log(8689)= 3.9389697972229
Log(21)=1.3222192947339
Log218689=3.9389697972229 ÷ 1.3222192947339
Ans=2.9790593836521
Step2
Alternatively, the logarithm can be calculated like this.