658527 ÷ 21 
We want to figure out the number of times 658527 can be divided by 21.

On to step 1:
21 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 21

Advancing to step 2:
If we divide 65 by 21, we get 3 and a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 63 from 65 leaves us with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 21

Moving on to step 3:
21 goes into 28 1 times with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 31.0
If we take 21 away from 28, we end up with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 21

Moving on to step 4:
75 divided by 21 is 3 with a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 313.0
If we subtract 63 from 75, we get 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 21

Let's proceed to step 5:
If we divide 122 by 21, we get 5 and a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 3135.0
The remainder is 17 after subtracting 105 from 122.
Fetch the next digit (7) from the dividend, attach it to 17 and continue: 177 / 21

On to step 6:
The number 21 fits into 177 8 times, leaving a remainder of 9.
Record the quotient 8 as the next digit in the result. 
Result so far: 31358.0
If we take 168 away from 177, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 7:
When dividing 90 by 21, we get 4 with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 31358.4
Deduct 84 from 90 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 8:
21 goes into 60 2 times with a remainder of 18.
The next digit of our result is 2. 
Result so far: 31358.42
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
If we divide 180 by 21, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 31358.428
Subtracting 168 from 180 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 10:
When dividing 120 by 21, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 31358.4285
Deduct 105 from 120 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 11:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 31358.42857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 12:
When dividing 30 by 21, we get 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 31358.428571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 13:
If we divide 90 by 21, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 31358.4285714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 14:
When dividing 60 by 21, we get 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 31358.42857142
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 31358.42857142 and a remainder of 1.8e-08.