In log tables, we find the number 36 in the first column. In this row in the next column (under zero), we find 5563 (the decimal point is dropped in other columns). This gives 5563 as the mantissa for the log of all number whose significant digits are 3 and 6.
`therefore` Prefixing characteristic, we have log36 = 1.5563
Similarly log3600 = 3.5563 and log0.0036 = `bar(3).5563`.
