It may be a stupid question, but I cannot find an answer for a long time.
Let us calculate
In[1]:= x = 1/7.0
Out[1]= 0.142857
x has precision not less than 15:
In[2]:= Precision[x]
Out[2]= MachinePrecision
In[3]:= $MachinePrecision
Out[3]= 15.9546
But I can see only 5 digits after the point. The second argument of N does not help:
In[4]:= N[x, 15]
Out[4]= 0.142857
How can I see more digits of x?
Why I see a different result if I set the precision explicitely?
In[5]:= y = 1/7.0`15
Out[5]= 0.142857142857143
