Predicted Tobit values equation Wooldridge

#1
I am trying to confirm the predicted values for education in Figure 17.3 for Wooldridge's Introductory Econometrics, https://economics.ut.ac.ir/document...tory_Econometrics_A_Modern_Approach__2012.pdf.

Predicted values are derived from the lower equation in the figure. Given my limited math background, I'm struggling to understand the empty set symbol. I tried plugging in the values for education level eight, which according to the above paragraph supposedly results in a predicted value of 423.9. This is what I tried:

predicted hours=[(-694.12 + (80.65*8) )/1,122.02] * (-694.12 + (80.65*8)) + 1,122.02 * [(-694.12 * (80.65*8))/1,122.02].

However, I did not get 423.9. Is the above correct?