Use the form below to do your conversion.
Solution
Step1
Log217915=Log(7915) ÷ Log(21)
Log(7915)= 3.8984509191984
Log(21)=1.3222192947339
Log217915=3.8984509191984 ÷ 1.3222192947339
Ans=2.9484147862045
Step2
Alternatively, the logarithm can be calculated like this.