13986484 divided by 661 
We want to divide 13986484 by 661.

On to step 1:
When dividing 1 by 661, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 661

Moving on to step 2:
If we divide 13 by 661, we get 0 and a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 661

Step 3:
661 goes into 139 0 times with a remainder of 139.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 139 after subtracting 0 from 139.
Include the next digit (8) from the dividend after 139, then repeat: 1398 / 661

Moving on to step 4:
1398 divided by 661 is 2 with a remainder of 76.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 1322 from 1398 to get 76.
Grab the next digit (6) from the dividend, add it to 76, then carry on: 766 / 661

Let's proceed to step 5:
The number 661 fits into 766 1 times, leaving a remainder of 105.
Write down 1 as next digit of the result. 
Result so far: 21.0
If we subtract 661 from 766, we get 105.
Grab the next digit (4) from the dividend, add it to 105, then carry on: 1054 / 661

On to step 6:
661 goes into 1054 1 times with a remainder of 393.
Put 1 as the next digit of the answer. 
Result so far: 211.0
The remainder is 393 after subtracting 661 from 1054.
Append the next digit (8) from the dividend to 393 and continue with: 3938 / 661

Moving on to step 7:
661 can be fit into 3938 5 times, resulting in a remainder of 633.
Put 5 as the next digit of the answer. 
Result so far: 2115.0
Subtract 3305 from 3938 to get 633.
Grab the next digit (4) from the dividend, add it to 633, then carry on: 6334 / 661

On to step 8:
661 goes into 6334 9 times with a remainder of 385.
The next digit of our result is 9. 
Result so far: 21159.0
Deduct 5949 from 6334 and we're left with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Advancing to step 9:
The number 661 fits into 3850 5 times, leaving a remainder of 545.
The next digit of our result is 5. 
Result so far: 21159.5
Deduct 3305 from 3850 and we're left with 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Moving on to step 10:
The number 661 fits into 5450 8 times, leaving a remainder of 162.
Put 8 as the next digit of the answer. 
Result so far: 21159.58
If we subtract 5288 from 5450, we get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Moving on to step 11:
661 goes into 1620 2 times with a remainder of 298.
Put 2 as the next digit of the answer. 
Result so far: 21159.582
If we subtract 1322 from 1620, we get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Step 12:
When dividing 2980 by 661, we get 4 with a remainder of 336.
Use 4 as the next digit of our solution. 
Result so far: 21159.5824
Deduct 2644 from 2980 and we're left with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Moving on to step 13:
The number 661 fits into 3360 5 times, leaving a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 21159.58245
Subtract 3305 from 3360 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 14:
661 goes into 550 0 times with a remainder of 550.
Record the quotient 0 as the next digit in the result. 
Result so far: 21159.58245
Deduct 0 from 550 and we're left with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

On to step 15:
The number 661 fits into 5500 8 times, leaving a remainder of 212.
The number 8 becomes the next digit in our result. 
Result so far: 21159.5824508
Deduct 5288 from 5500 and we're left with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Moving on to step 16:
661 can be fit into 2120 3 times, resulting in a remainder of 137.
The number 3 becomes the next digit in our result. 
Result so far: 21159.58245083
If we take 1983 away from 2120, we end up with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

In conclusion, the division gives 21159.58245083 with a balance of 1.37e-07.