Use the form below to do your conversion.
Solution
Step1
Log218509=Log(8509) ÷ Log(21)
Log(8509)= 3.9298785236568
Log(21)=1.3222192947339
Log218509=3.9298785236568 ÷ 1.3222192947339
Ans=2.9721836153114
Step2
Alternatively, the logarithm can be calculated like this.