Use the form below to do your conversion.
Solution
Step1
Log217931=Log(7931) ÷ Log(21)
Log(7931)= 3.8993279498777
Log(21)=1.3222192947339
Log217931=3.8993279498777 ÷ 1.3222192947339
Ans=2.9490780881868
Step2
Alternatively, the logarithm can be calculated like this.