Use the form below to do your conversion.
Solution
Step1
Log218489=Log(8489) ÷ Log(21)
Log(8489)= 3.9288565335819
Log(21)=1.3222192947339
Log218489=3.9288565335819 ÷ 1.3222192947339
Ans=2.97141067993
Step2
Alternatively, the logarithm can be calculated like this.