Let's divide 86783699 by 520
We want to divide 86783699 by 520.

On to step 1:
520 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 520

Let's proceed to step 2:
If we divide 86 by 520, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Include the next digit (7) from the dividend after 86, then repeat: 867 / 520

Moving on to step 3:
520 can be fit into 867 1 times, resulting in a remainder of 347.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 520 from 867 and we're left with 347.
Include the next digit (8) from the dividend after 347, then repeat: 3478 / 520

Advancing to step 4:
If we divide 3478 by 520, we get 6 and a remainder of 358.
The next digit of our result is 6. 
Result so far: 16.0
Subtracting 3120 from 3478 leaves us with 358.
Grab the next digit (3) from the dividend, add it to 358, then carry on: 3583 / 520

Going ahead to step 5:
The number 520 fits into 3583 6 times, leaving a remainder of 463.
Use 6 as the next digit of our solution. 
Result so far: 166.0
Subtract 3120 from 3583 to get 463.
Grab the next digit (6) from the dividend, add it to 463, then carry on: 4636 / 520

Going ahead to step 6:
If we divide 4636 by 520, we get 8 and a remainder of 476.
Record the quotient 8 as the next digit in the result. 
Result so far: 1668.0
The remainder is 476 after subtracting 4160 from 4636.
Take the next digit (9) from the dividend and append it to 476, then repeat: 4769 / 520

Let's proceed to step 7:
When dividing 4769 by 520, we get 9 with a remainder of 89.
The number 9 becomes the next digit in our result. 
Result so far: 16689.0
If we take 4680 away from 4769, we end up with 89.
Include the next digit (9) from the dividend after 89, then repeat: 899 / 520

Going ahead to step 8:
When dividing 899 by 520, we get 1 with a remainder of 379.
Write down 1 as next digit of the result. 
Result so far: 166891.0
Subtract 520 from 899 to get 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

Step 9:
520 can be fit into 3790 7 times, resulting in a remainder of 150.
Write down 7 as next digit of the result. 
Result so far: 166891.7
If we subtract 3640 from 3790, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 10:
1500 divided by 520 is 2 with a remainder of 460.
Write down 2 as next digit of the result. 
Result so far: 166891.72
If we subtract 1040 from 1500, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Moving on to step 11:
520 goes into 4600 8 times with a remainder of 440.
Put 8 as the next digit of the answer. 
Result so far: 166891.728
The remainder is 440 after subtracting 4160 from 4600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Step 12:
When dividing 4400 by 520, we get 8 with a remainder of 240.
Use 8 as the next digit of our solution. 
Result so far: 166891.7288
Subtracting 4160 from 4400 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The quotient of the division is 166891.7288, and the remainder is 0.0024.