We divide 86991417 by 561
We're looking to find how many times 561 goes into 86991417.

Going ahead to step 1:
8 divided by 561 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 561

Moving on to step 2:
When dividing 86 by 561, we get 0 with a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Take the next digit (9) from the dividend and append it to 86, then repeat: 869 / 561

Moving on to step 3:
561 goes into 869 1 times with a remainder of 308.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 561 from 869 and we're left with 308.
Grab the next digit (9) from the dividend, add it to 308, then carry on: 3089 / 561

On to step 4:
If we divide 3089 by 561, we get 5 and a remainder of 284.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we subtract 2805 from 3089, we get 284.
Fetch the next digit (1) from the dividend, attach it to 284 and continue: 2841 / 561

Advancing to step 5:
561 can be fit into 2841 5 times, resulting in a remainder of 36.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
The remainder is 36 after subtracting 2805 from 2841.
Take the next digit (4) from the dividend and append it to 36, then repeat: 364 / 561

Let's proceed to step 6:
561 can be fit into 364 0 times, resulting in a remainder of 364.
Write down 0 as next digit of the result. 
Result so far: 1550.0
The remainder is 364 after subtracting 0 from 364.
Take the next digit (1) from the dividend and append it to 364, then repeat: 3641 / 561

Moving on to step 7:
3641 divided by 561 is 6 with a remainder of 275.
Record the quotient 6 as the next digit in the result. 
Result so far: 15506.0
The remainder is 275 after subtracting 3366 from 3641.
Include the next digit (7) from the dividend after 275, then repeat: 2757 / 561

Going ahead to step 8:
561 can be fit into 2757 4 times, resulting in a remainder of 513.
The number 4 becomes the next digit in our result. 
Result so far: 155064.0
Deduct 2244 from 2757 and we're left with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

On to step 9:
If we divide 5130 by 561, we get 9 and a remainder of 81.
Write down 9 as next digit of the result. 
Result so far: 155064.9
The remainder is 81 after subtracting 5049 from 5130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 10:
810 divided by 561 is 1 with a remainder of 249.
Write down 1 as next digit of the result. 
Result so far: 155064.91
Deduct 561 from 810 and we're left with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Moving on to step 11:
If we divide 2490 by 561, we get 4 and a remainder of 246.
Put 4 as the next digit of the answer. 
Result so far: 155064.914
Subtracting 2244 from 2490 leaves us with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Moving on to step 12:
When dividing 2460 by 561, we get 4 with a remainder of 216.
Put 4 as the next digit of the answer. 
Result so far: 155064.9144
Deduct 2244 from 2460 and we're left with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

The final result is 155064.9144 with a remainder of 0.00216.