how to calculate large value of phi in central limit theorem?

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I have $\Phi(7.5)$ in my solution how do I calculate this large value from the Z table?

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You can see the values for values displayed are very close to 1 as your $z$ value gets larger (for example, $z=3.00$ gets you $\phi(3.00) = .9987$.

For a value $z = 7.5$, it is so far off the table you can essentially assume it to be 1.