Use the form below to do your conversion.
Solution
Step1
Log217069=Log(7069) ÷ Log(21)
Log(7069)= 3.8493579816613
Log(21)=1.3222192947339
Log217069=3.8493579816613 ÷ 1.3222192947339
Ans=2.911285591575
Step2
Alternatively, the logarithm can be calculated like this.