Use the form below to do your conversion.
Solution
Step1
Log217715=Log(7715) ÷ Log(21)
Log(7715)= 3.8873359303992
Log(21)=1.3222192947339
Log217715=3.8873359303992 ÷ 1.3222192947339
Ans=2.9400084735425
Step2
Alternatively, the logarithm can be calculated like this.