Use the form below to do your conversion.
Solution
Step1
Log217711=Log(7711) ÷ Log(21)
Log(7711)= 3.8871107031249
Log(21)=1.3222192947339
Log217711=3.8871107031249 ÷ 1.3222192947339
Ans=2.9398381332101
Step2
Alternatively, the logarithm can be calculated like this.