Use the form below to do your conversion.
Solution
Step1
Log217745=Log(7745) ÷ Log(21)
Log(7745)= 3.8890214220952
Log(21)=1.3222192947339
Log217745=3.8890214220952 ÷ 1.3222192947339
Ans=2.9412832179838
Step2
Alternatively, the logarithm can be calculated like this.