First, we need to calculate 250 x 170:

250 x 170 = 42500

Next, subtract 23000 from the result:

42500 - 23000 = 19500

Then, multiply 14500 by 15:

14500 x 15 = 217500

Finally, add this result to the previous result:

19500 + 217500 = 237000

So, (250 x 170 - 23000) + 14500 x 15 = 237000.