83879875 divided by 688 
We want to divide 83879875 by 688.

On to step 1:
When dividing 8 by 688, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 688

Going ahead to step 2:
When dividing 83 by 688, we get 0 with a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 83 to get 83.
Bring next digit (8) of the dividend behind the 83 and repeat the process: 838 / 688

On to step 3:
838 divided by 688 is 1 with a remainder of 150.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 150 after subtracting 688 from 838.
Fetch the next digit (7) from the dividend, attach it to 150 and continue: 1507 / 688

Let's proceed to step 4:
688 can be fit into 1507 2 times, resulting in a remainder of 131.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 1376 from 1507 to get 131.
Bring next digit (9) of the dividend behind the 131 and repeat the process: 1319 / 688

Advancing to step 5:
If we divide 1319 by 688, we get 1 and a remainder of 631.
Write down 1 as next digit of the result. 
Result so far: 121.0
The remainder is 631 after subtracting 688 from 1319.
Append the next digit (8) from the dividend to 631 and continue with: 6318 / 688

Let's proceed to step 6:
When dividing 6318 by 688, we get 9 with a remainder of 126.
Put 9 as the next digit of the answer. 
Result so far: 1219.0
If we subtract 6192 from 6318, we get 126.
Fetch the next digit (7) from the dividend, attach it to 126 and continue: 1267 / 688

Let's proceed to step 7:
When dividing 1267 by 688, we get 1 with a remainder of 579.
Put 1 as the next digit of the answer. 
Result so far: 12191.0
If we subtract 688 from 1267, we get 579.
Grab the next digit (5) from the dividend, add it to 579, then carry on: 5795 / 688

On to step 8:
If we divide 5795 by 688, we get 8 and a remainder of 291.
The next digit of our result is 8. 
Result so far: 121918.0
If we take 5504 away from 5795, we end up with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

On to step 9:
2910 divided by 688 is 4 with a remainder of 158.
Record the quotient 4 as the next digit in the result. 
Result so far: 121918.4
If we subtract 2752 from 2910, we get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 10:
If we divide 1580 by 688, we get 2 and a remainder of 204.
Use 2 as the next digit of our solution. 
Result so far: 121918.42
If we take 1376 away from 1580, we end up with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Going ahead to step 11:
If we divide 2040 by 688, we get 2 and a remainder of 664.
The number 2 becomes the next digit in our result. 
Result so far: 121918.422
If we take 1376 away from 2040, we end up with 664.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6640, and continue the process.

The final outcome is 121918.422, with a leftover of 0.0664.