Use the form below to do your conversion.
Solution
Step1
Log219979=Log(9979) ÷ Log(21)
Log(9979)= 3.9990870226259
Log(21)=1.3222192947339
Log219979=3.9990870226259 ÷ 1.3222192947339
Ans=3.0245262934472
Step2
Alternatively, the logarithm can be calculated like this.