x = 32.123456789123456789....
10^9 * x = 32123456789.123456789.... # we multiply by 10^9 in order to get the repeated part before the decimal point
thus 10^9 *x -x = 32123456789.123456789.... - 32.123456789123456789....
x(10^9 -1 ) = ( 32123456789 - 32) # since 123456789123456789 after the decimal point is repeated when we delete x from 10^9 * x the value after decimal is removed)
x = ( 32123456789 - 32) / ( 10^9 - 1 )
= 32123456757 / 999,999,999
which is a rational number
