Use the form below to do your conversion.
Solution
Step1
Log217009=Log(7009) ÷ Log(21)
Log(7009)= 3.8456560599835
Log(21)=1.3222192947339
Log217009=3.8456560599835 ÷ 1.3222192947339
Ans=2.9084858126786
Step2
Alternatively, the logarithm can be calculated like this.