Use the form below to do your conversion.
Solution
Step1
Log217847=Log(7847) ÷ Log(21)
Log(7847)= 3.8947036526092
Log(21)=1.3222192947339
Log217847=3.8947036526092 ÷ 1.3222192947339
Ans=2.9455807127614
Step2
Alternatively, the logarithm can be calculated like this.