Use the form below to do your conversion.
Solution
Step1
Log219907=Log(9907) ÷ Log(21)
Log(9907)= 3.9959421629926
Log(21)=1.3222192947339
Log219907=3.9959421629926 ÷ 1.3222192947339
Ans=3.0221478229121
Step2
Alternatively, the logarithm can be calculated like this.