Use the form below to do your conversion.
Solution
Step1
Log217721=Log(7721) ÷ Log(21)
Log(7721)= 3.8876735524544
Log(21)=1.3222192947339
Log217721=3.8876735524544 ÷ 1.3222192947339
Ans=2.9402638185194
Step2
Alternatively, the logarithm can be calculated like this.