Use the form below to do your conversion.
Solution
Step1
Log219847=Log(9847) ÷ Log(21)
Log(9847)= 3.9933039379195
Log(21)=1.3222192947339
Log219847=3.9933039379195 ÷ 1.3222192947339
Ans=3.0201525222207
Step2
Alternatively, the logarithm can be calculated like this.