Use the form below to do your conversion.
Solution
Step1
Log2015107=Log(15107) ÷ Log(20)
Log(15107)= 4.1791782292098
Log(20)=1.301029995664
Log2015107=4.1791782292098 ÷ 1.301029995664
Ans=3.2122074380591
Step2
Alternatively, the logarithm can be calculated like this.