Use the form below to do your conversion.
Solution
Step1
Log219799=Log(9799) ÷ Log(21)
Log(9799)= 3.9911817576679
Log(21)=1.3222192947339
Log219799=3.9911817576679 ÷ 1.3222192947339
Ans=3.0185475083927
Step2
Alternatively, the logarithm can be calculated like this.