86188866 ÷ 525 
We want to figure out the number of times 86188866 can be divided by 525.

Moving on to step 1:
When dividing 8 by 525, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 525

Going ahead to step 2:
525 can be fit into 86 0 times, resulting in a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Fetch the next digit (1) from the dividend, attach it to 86 and continue: 861 / 525

Moving on to step 3:
525 can be fit into 861 1 times, resulting in a remainder of 336.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 525 from 861, we get 336.
Append the next digit (8) from the dividend to 336 and continue with: 3368 / 525

Advancing to step 4:
If we divide 3368 by 525, we get 6 and a remainder of 218.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtracting 3150 from 3368 leaves us with 218.
Bring next digit (8) of the dividend behind the 218 and repeat the process: 2188 / 525

Let's proceed to step 5:
525 goes into 2188 4 times with a remainder of 88.
Write down 4 as next digit of the result. 
Result so far: 164.0
Deduct 2100 from 2188 and we're left with 88.
Fetch the next digit (8) from the dividend, attach it to 88 and continue: 888 / 525

Advancing to step 6:
When dividing 888 by 525, we get 1 with a remainder of 363.
The number 1 becomes the next digit in our result. 
Result so far: 1641.0
Deduct 525 from 888 and we're left with 363.
Append the next digit (6) from the dividend to 363 and continue with: 3636 / 525

Advancing to step 7:
3636 divided by 525 is 6 with a remainder of 486.
Put 6 as the next digit of the answer. 
Result so far: 16416.0
If we take 3150 away from 3636, we end up with 486.
Include the next digit (6) from the dividend after 486, then repeat: 4866 / 525

Moving on to step 8:
If we divide 4866 by 525, we get 9 and a remainder of 141.
The number 9 becomes the next digit in our result. 
Result so far: 164169.0
Subtract 4725 from 4866 to get 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

On to step 9:
When dividing 1410 by 525, we get 2 with a remainder of 360.
Record the quotient 2 as the next digit in the result. 
Result so far: 164169.2
If we take 1050 away from 1410, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Let's proceed to step 10:
3600 divided by 525 is 6 with a remainder of 450.
Record the quotient 6 as the next digit in the result. 
Result so far: 164169.26
Deduct 3150 from 3600 and we're left with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

On to step 11:
525 can be fit into 4500 8 times, resulting in a remainder of 300.
The next digit of our result is 8. 
Result so far: 164169.268
Subtract 4200 from 4500 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Going ahead to step 12:
3000 divided by 525 is 5 with a remainder of 375.
The number 5 becomes the next digit in our result. 
Result so far: 164169.2685
Deduct 2625 from 3000 and we're left with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Advancing to step 13:
525 goes into 3750 7 times with a remainder of 75.
Use 7 as the next digit of our solution. 
Result so far: 164169.26857
Subtracting 3675 from 3750 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 14:
525 can be fit into 750 1 times, resulting in a remainder of 225.
Put 1 as the next digit of the answer. 
Result so far: 164169.268571
If we subtract 525 from 750, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Advancing to step 15:
The number 525 fits into 2250 4 times, leaving a remainder of 150.
Put 4 as the next digit of the answer. 
Result so far: 164169.2685714
If we subtract 2100 from 2250, 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.

Advancing to step 16:
525 can be fit into 1500 2 times, resulting in a remainder of 450.
Record the quotient 2 as the next digit in the result. 
Result so far: 164169.26857142
Subtract 1050 from 1500 to get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

In conclusion, the division gives 164169.26857142 with a balance of 4.5e-07.