Larry Bradley said:

> Now, given an gain of 16.166666, to add 19.7 volts to the output
> requires adding 19.7/16.17 = 1.218 volts to the reference input.

If you did this, when the input was 1.2 volts, your output would be less
than 1.2 volts. Remember this circuit has negative gain.

Cheerful regards,
Bob

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