We're dividing 86369625 by 521 
Let's see how many times 521 fits into 86369625.

Step 1:
If we divide 8 by 521, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 521

Step 2:
521 can be fit into 86 0 times, resulting in a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Bring next digit (3) of the dividend behind the 86 and repeat the process: 863 / 521

Step 3:
521 goes into 863 1 times with a remainder of 342.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 342 after subtracting 521 from 863.
Fetch the next digit (6) from the dividend, attach it to 342 and continue: 3426 / 521

Advancing to step 4:
If we divide 3426 by 521, we get 6 and a remainder of 300.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtract 3126 from 3426 to get 300.
Grab the next digit (9) from the dividend, add it to 300, then carry on: 3009 / 521

Let's proceed to step 5:
3009 divided by 521 is 5 with a remainder of 404.
Put 5 as the next digit of the answer. 
Result so far: 165.0
Deduct 2605 from 3009 and we're left with 404.
Take the next digit (6) from the dividend and append it to 404, then repeat: 4046 / 521

Step 6:
521 goes into 4046 7 times with a remainder of 399.
Put 7 as the next digit of the answer. 
Result so far: 1657.0
If we subtract 3647 from 4046, we get 399.
Include the next digit (2) from the dividend after 399, then repeat: 3992 / 521

Step 7:
521 goes into 3992 7 times with a remainder of 345.
Use 7 as the next digit of our solution. 
Result so far: 16577.0
The remainder is 345 after subtracting 3647 from 3992.
Include the next digit (5) from the dividend after 345, then repeat: 3455 / 521

On to step 8:
3455 divided by 521 is 6 with a remainder of 329.
The number 6 becomes the next digit in our result. 
Result so far: 165776.0
Subtract 3126 from 3455 to get 329.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3290, and continue the process.

On to step 9:
3290 divided by 521 is 6 with a remainder of 164.
The next digit of our result is 6. 
Result so far: 165776.6
Subtract 3126 from 3290 to get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Going ahead to step 10:
When dividing 1640 by 521, we get 3 with a remainder of 77.
The number 3 becomes the next digit in our result. 
Result so far: 165776.63
Deduct 1563 from 1640 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 11:
The number 521 fits into 770 1 times, leaving a remainder of 249.
The number 1 becomes the next digit in our result. 
Result so far: 165776.631
The remainder is 249 after subtracting 521 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

On to step 12:
The number 521 fits into 2490 4 times, leaving a remainder of 406.
The next digit of our result is 4. 
Result so far: 165776.6314
The remainder is 406 after subtracting 2084 from 2490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Let's proceed to step 13:
The number 521 fits into 4060 7 times, leaving a remainder of 413.
The number 7 becomes the next digit in our result. 
Result so far: 165776.63147
If we take 3647 away from 4060, we end up with 413.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

Advancing to step 14:
When dividing 4130 by 521, we get 7 with a remainder of 483.
Record the quotient 7 as the next digit in the result. 
Result so far: 165776.631477
If we take 3647 away from 4130, we end up with 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

In conclusion, the division gives 165776.631477 with a balance of 4.83e-05.