10/6 = I do not understand

Refer to instructions that came with camera read, understand and follow pages 20-25. If you lost your instructions you can google the model number manual. After your read you will understand that it means Auto Focus

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Hey there Gene, for your Ellipsis 10 you can visit this website and find different links to help you better understand and become more familiar with your tablet: Verizon Ellipsis 10 Support
Even if your tablet is not the Verizon brand, the information can still apply with helping you with some of the questions you may have. Thanks for your question!

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I assume you mean (2x12)/4+10-6 as in your first post. I can understand how you got the wrong answer of 3 in that case but not as you wrote it here.

Multiplication and division get precedence over addition and subtraction.

First, evaluate the expression inside the parentheses: 2x12 is 24.
Then divide by 4 to get 6.
Add 10 to get 16.
Subtract 6 to get 10.

If you incorrectly do addition and subtraction before division then you divide 24 by 4+10-6 (which is 8) and get 3.

The part we don't understand is the make and model of your television.

Without knowing exactly what you're doing I can't be sure, but I suspect you're entering the 10^9 as something like 1 0 EE 9 .

1 0 EE 9 gives you 10 * 10^9, which is 10^10. You should be doing this as 1 5 0 0 / 1 EE 9 = .

10 blinks means Power supply problem,google Understanding Sony Blinking Codes.

HI there error code E:61:10 means
E:61:10 Zoom operations fault Inspect the lens block zoom reset sensor
Hope you understand. Thanks & waiting for your feedback.

Hello,
The error comes from the lack of understanding of the meaning of the notation used by the calculator manufacturers.
The [EE] is a "shorthand" notation for times 10 to the power of .
To convince you of it try entering

1[EE]0 [=] this is 1*10^0=1*1=1
1[EE]1 [=] this is 1*10^1=1*10=10
1[EE]2 [=] this is 1*10^2=1*100=100

When you enter 7.82x10[EE]10
you are calculating
7.82*10*1*10^10=7.82x10^11.

Hope it helps.