Use the form below to do your conversion.
Solution
Step1
Log87121=Log(7121) ÷ Log(8)
Log(7121)= 3.8525409857698
Log(8)=0.90308998699194
Log87121=3.8525409857698 ÷ 0.90308998699194
Ans=4.2659547124446
Step2
Alternatively, the logarithm can be calculated like this.