Use the form below to do your conversion.
Solution
Step1
Log219985=Log(9985) ÷ Log(21)
Log(9985)= 3.9993480692067
Log(21)=1.3222192947339
Log219985=3.9993480692067 ÷ 1.3222192947339
Ans=3.0247237240715
Step2
Alternatively, the logarithm can be calculated like this.