686575 ÷ 54 
We want to figure out the number of times 686575 can be divided by 54.

Step 1:
When dividing 6 by 54, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 54

Going ahead to step 2:
The number 54 fits into 68 1 times, leaving a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 54 from 68 to get 14.
Append the next digit (6) from the dividend to 14 and continue with: 146 / 54

Going ahead to step 3:
54 goes into 146 2 times with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtract 108 from 146 to get 38.
Take the next digit (5) from the dividend and append it to 38, then repeat: 385 / 54

On to step 4:
385 divided by 54 is 7 with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 127.0
If we subtract 378 from 385, we get 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 54

Advancing to step 5:
If we divide 77 by 54, we get 1 and a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 1271.0
The remainder is 23 after subtracting 54 from 77.
Bring next digit (5) of the dividend behind the 23 and repeat the process: 235 / 54

Step 6:
If we divide 235 by 54, we get 4 and a remainder of 19.
The next digit of our result is 4. 
Result so far: 12714.0
If we take 216 away from 235, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
When dividing 190 by 54, we get 3 with a remainder of 28.
Write down 3 as next digit of the result. 
Result so far: 12714.3
Subtracting 162 from 190 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 8:
54 goes into 280 5 times with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 12714.35
Deduct 270 from 280 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
The number 54 fits into 100 1 times, leaving a remainder of 46.
The next digit of our result is 1. 
Result so far: 12714.351
Deduct 54 from 100 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 10:
54 goes into 460 8 times with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 12714.3518
If we take 432 away from 460, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
The number 54 fits into 280 5 times, leaving a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 12714.35185
If we subtract 270 from 280, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 12:
54 goes into 100 1 times with a remainder of 46.
Write down 1 as next digit of the result. 
Result so far: 12714.351851
Deduct 54 from 100 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 13:
If we divide 460 by 54, we get 8 and a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 12714.3518518
If we subtract 432 from 460, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 14:
54 goes into 280 5 times with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 12714.35185185
Subtract 270 from 280 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 12714.35185185, with a leftover of 1e-08.