How to predict output in a regression problem?

Hi everyone
I want to use a regression model of TensorFlow for machine learning some data in my project. I studied the TensorFlow tutorial in this link:

https://www.tensorflow.org/tutorials/keras/regression

Everything looks clear except that I Don’t know how to predict numbers with that! I mean I want to give it some numbers as input and get a number (output) as expected value based on trained model.
Could you please help me with that? Thank you!

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