Let's divide 86663791 by 680
Our goal is to divide 86663791 by 680.

Let's proceed to step 1:
The number 680 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 680

Going ahead to step 2:
86 divided by 680 is 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Take the next digit (6) from the dividend and append it to 86, then repeat: 866 / 680

Going ahead to step 3:
The number 680 fits into 866 1 times, leaving a remainder of 186.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 186 after subtracting 680 from 866.
Include the next digit (6) from the dividend after 186, then repeat: 1866 / 680

Advancing to step 4:
When dividing 1866 by 680, we get 2 with a remainder of 506.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 1360 from 1866, we get 506.
Grab the next digit (3) from the dividend, add it to 506, then carry on: 5063 / 680

Advancing to step 5:
The number 680 fits into 5063 7 times, leaving a remainder of 303.
Record the quotient 7 as the next digit in the result. 
Result so far: 127.0
If we take 4760 away from 5063, we end up with 303.
Include the next digit (7) from the dividend after 303, then repeat: 3037 / 680

Going ahead to step 6:
680 can be fit into 3037 4 times, resulting in a remainder of 317.
Use 4 as the next digit of our solution. 
Result so far: 1274.0
Subtract 2720 from 3037 to get 317.
Include the next digit (9) from the dividend after 317, then repeat: 3179 / 680

Moving on to step 7:
The number 680 fits into 3179 4 times, leaving a remainder of 459.
Use 4 as the next digit of our solution. 
Result so far: 12744.0
The remainder is 459 after subtracting 2720 from 3179.
Bring next digit (1) of the dividend behind the 459 and repeat the process: 4591 / 680

Let's proceed to step 8:
If we divide 4591 by 680, we get 6 and a remainder of 511.
Write down 6 as next digit of the result. 
Result so far: 127446.0
If we subtract 4080 from 4591, we get 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Going ahead to step 9:
680 can be fit into 5110 7 times, resulting in a remainder of 350.
The next digit of our result is 7. 
Result so far: 127446.7
If we subtract 4760 from 5110, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 10:
680 goes into 3500 5 times with a remainder of 100.
Put 5 as the next digit of the answer. 
Result so far: 127446.75
If we subtract 3400 from 3500, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 11:
When dividing 1000 by 680, we get 1 with a remainder of 320.
Use 1 as the next digit of our solution. 
Result so far: 127446.751
Subtract 680 from 1000 to 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.

Step 12:
If we divide 3200 by 680, we get 4 and a remainder of 480.
Put 4 as the next digit of the answer. 
Result so far: 127446.7514
Deduct 2720 from 3200 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Moving on to step 13:
The number 680 fits into 4800 7 times, leaving a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 127446.75147
If we take 4760 away from 4800, we end up 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.

Let's proceed to step 14:
If we divide 400 by 680, we get 0 and a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 127446.75147
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 15:
If we divide 4000 by 680, we get 5 and a remainder of 600.
Put 5 as the next digit of the answer. 
Result so far: 127446.7514705
Deduct 3400 from 4000 and we're left with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

On to step 16:
If we divide 6000 by 680, we get 8 and a remainder of 560.
Write down 8 as next digit of the result. 
Result so far: 127446.75147058
Subtracting 5440 from 6000 leaves us with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

In conclusion, the division gives 127446.75147058 with a balance of 5.6e-07.