Use the form below to do your conversion.
Solution
Step1
Log218717=Log(8717) ÷ Log(21)
Log(8717)= 3.9403670459857
Log(21)=1.3222192947339
Log218717=3.9403670459857 ÷ 1.3222192947339
Ans=2.9801161287535
Step2
Alternatively, the logarithm can be calculated like this.