, 1 followed by several zeros or
1 preceded by several zeros immediately to the right of the decimal point, then log n can be easily found If n is not an integral power of 10, then it is not easy to calculate log n But mathematicians have
made tables from which we can read off approximate value of the logarithm of any positive number
between 1 and 10 And these are sufficient for us to calculate the logarithm of any number expressed
in decimal form