Let's break down the expression step by step:

\[ 73.(8-59)-59.(8-73) \]

First, simplify the expressions inside the parentheses:

\[ 8 - 59 = -51 \]
\[ 8 - 73 = -65 \]

Now substitute these values back into the original expression:

\[ 73 \cdot (-51) - 59 \cdot (-65) \]

Next, perform the multiplications:

\[ 73 \cdot (-51) = -3723 \]
\[ 59 \cdot (-65) = -3835 \]

Now substitute these results back into the expression:

\[ -3723 - (-3835) \]

Subtracting a negative is the same as adding a positive:

\[ -3723 + 3835 \]

Finally, perform the addition:

\[ 3835 - 3723 = 112 \]

So, the value of the expression is:

\[ 112 \]