Use the form below to do your conversion.
Solution
Step1
Log21869=Log(869) ÷ Log(21)
Log(869)= 2.9390197764487
Log(21)=1.3222192947339
Log21869=2.9390197764487 ÷ 1.3222192947339
Ans=2.2227929876338
Step2
Alternatively, the logarithm can be calculated like this.