Use the form below to do your conversion.
Solution
Step1
Log217285=Log(7285) ÷ Log(21)
Log(7285)= 3.862429556106
Log(21)=1.3222192947339
Log217285=3.862429556106 ÷ 1.3222192947339
Ans=2.9211716781695
Step2
Alternatively, the logarithm can be calculated like this.