Use the form below to do your conversion.
Solution
Step1
Log219805=Log(9805) ÷ Log(21)
Log(9805)= 3.9914475980038
Log(21)=1.3222192947339
Log219805=3.9914475980038 ÷ 1.3222192947339
Ans=3.0187485645541
Step2
Alternatively, the logarithm can be calculated like this.