Let's divide 83121686 by 790
We want to divide 83121686 by 790.

Step 1:
If we divide 8 by 790, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 790

Going ahead to step 2:
790 can be fit into 83 0 times, resulting in a remainder of 83.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 83, we end up with 83.
Bring next digit (1) of the dividend behind the 83 and repeat the process: 831 / 790

Advancing to step 3:
The number 790 fits into 831 1 times, leaving a remainder of 41.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 41 after subtracting 790 from 831.
Take the next digit (2) from the dividend and append it to 41, then repeat: 412 / 790

Advancing to step 4:
When dividing 412 by 790, we get 0 with a remainder of 412.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 412 after subtracting 0 from 412.
Append the next digit (1) from the dividend to 412 and continue with: 4121 / 790

Advancing to step 5:
4121 divided by 790 is 5 with a remainder of 171.
Write down 5 as next digit of the result. 
Result so far: 105.0
If we subtract 3950 from 4121, we get 171.
Bring next digit (6) of the dividend behind the 171 and repeat the process: 1716 / 790

Advancing to step 6:
790 can be fit into 1716 2 times, resulting in a remainder of 136.
Put 2 as the next digit of the answer. 
Result so far: 1052.0
The remainder is 136 after subtracting 1580 from 1716.
Include the next digit (8) from the dividend after 136, then repeat: 1368 / 790

On to step 7:
When dividing 1368 by 790, we get 1 with a remainder of 578.
Record the quotient 1 as the next digit in the result. 
Result so far: 10521.0
The remainder is 578 after subtracting 790 from 1368.
Grab the next digit (6) from the dividend, add it to 578, then carry on: 5786 / 790

Advancing to step 8:
790 goes into 5786 7 times with a remainder of 256.
Put 7 as the next digit of the answer. 
Result so far: 105217.0
If we take 5530 away from 5786, we end up with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Going ahead to step 9:
790 goes into 2560 3 times with a remainder of 190.
Write down 3 as next digit of the result. 
Result so far: 105217.3
Subtracting 2370 from 2560 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 10:
The number 790 fits into 1900 2 times, leaving a remainder of 320.
Use 2 as the next digit of our solution. 
Result so far: 105217.32
If we subtract 1580 from 1900, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 11:
790 goes into 3200 4 times with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 105217.324
Deduct 3160 from 3200 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 12:
If we divide 400 by 790, we get 0 and a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 105217.324
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 13:
If we divide 4000 by 790, we get 5 and a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 105217.32405
The remainder is 50 after subtracting 3950 from 4000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 14:
790 can be fit into 500 0 times, resulting in a remainder of 500.
Use 0 as the next digit of our solution. 
Result so far: 105217.32405
The remainder is 500 after subtracting 0 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Going ahead to step 15:
If we divide 5000 by 790, we get 6 and a remainder of 260.
Use 6 as the next digit of our solution. 
Result so far: 105217.3240506
Subtract 4740 from 5000 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 16:
790 can be fit into 2600 3 times, resulting in a remainder of 230.
Put 3 as the next digit of the answer. 
Result so far: 105217.32405063
Subtract 2370 from 2600 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

The quotient of the division is 105217.32405063, and the remainder is 2.3e-07.