Let's divide 83598863 by 661
We're looking to find how many times 661 goes into 83598863.

Advancing to step 1:
When dividing 8 by 661, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 661

Going ahead to step 2:
If we divide 83 by 661, we get 0 and a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Fetch the next digit (5) from the dividend, attach it to 83 and continue: 835 / 661

Step 3:
If we divide 835 by 661, we get 1 and a remainder of 174.
The next digit of our result is 1. 
Result so far: 1.0
If we take 661 away from 835, we end up with 174.
Grab the next digit (9) from the dividend, add it to 174, then carry on: 1749 / 661

Advancing to step 4:
When dividing 1749 by 661, we get 2 with a remainder of 427.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 1322 away from 1749, we end up with 427.
Include the next digit (8) from the dividend after 427, then repeat: 4278 / 661

Let's proceed to step 5:
661 can be fit into 4278 6 times, resulting in a remainder of 312.
The next digit of our result is 6. 
Result so far: 126.0
Subtract 3966 from 4278 to get 312.
Grab the next digit (8) from the dividend, add it to 312, then carry on: 3128 / 661

On to step 6:
661 can be fit into 3128 4 times, resulting in a remainder of 484.
The number 4 becomes the next digit in our result. 
Result so far: 1264.0
Deduct 2644 from 3128 and we're left with 484.
Include the next digit (6) from the dividend after 484, then repeat: 4846 / 661

Step 7:
661 can be fit into 4846 7 times, resulting in a remainder of 219.
Use 7 as the next digit of our solution. 
Result so far: 12647.0
Subtracting 4627 from 4846 leaves us with 219.
Append the next digit (3) from the dividend to 219 and continue with: 2193 / 661

Step 8:
661 can be fit into 2193 3 times, resulting in a remainder of 210.
Write down 3 as next digit of the result. 
Result so far: 126473.0
If we subtract 1983 from 2193, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 9:
If we divide 2100 by 661, we get 3 and a remainder of 117.
Record the quotient 3 as the next digit in the result. 
Result so far: 126473.3
If we subtract 1983 from 2100, we get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Advancing to step 10:
The number 661 fits into 1170 1 times, leaving a remainder of 509.
Use 1 as the next digit of our solution. 
Result so far: 126473.31
Subtracting 661 from 1170 leaves us with 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

On to step 11:
The number 661 fits into 5090 7 times, leaving a remainder of 463.
Use 7 as the next digit of our solution. 
Result so far: 126473.317
If we subtract 4627 from 5090, we get 463.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4630, and continue the process.

Let's proceed to step 12:
The number 661 fits into 4630 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 126473.3177
Subtract 4627 from 4630 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

In conclusion, the division gives 126473.3177 with a balance of 3e-05.