Correct two floating-point representations printed by the interpreter in

interactive examples.  Error noted by Dinu Gherman.

Doc/tut/tut.tex

@@ -427,7 +427,7 @@ operands convert the integer operand to floating point:
 
 \begin{verbatim}
 >>> 4 * 2.5 / 3.3
-3.0303030303
+3.0303030303030303
 >>> 7.0 / 2
 3.5
 \end{verbatim}
@@ -477,7 +477,7 @@ TypeError: can't convert complex to float; use e.g. abs(z)
 >>> a.real
 1.5
 >>> abs(a)
-1.58113883008
+1.5811388300841898
 \end{verbatim}
 
 In interactive mode, the last printed expression is assigned to the