Use the form below to do your conversion.
Solution
Step1
Log218909=Log(8909) ÷ Log(21)
Log(8909)= 3.9498289589353
Log(21)=1.3222192947339
Log218909=3.9498289589353 ÷ 1.3222192947339
Ans=2.987272213215
Step2
Alternatively, the logarithm can be calculated like this.