528674 ÷ 21 
We want to figure out the number of times 528674 can be divided by 21.

Moving on to step 1:
The number 21 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 21

Let's proceed to step 2:
21 goes into 52 2 times with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 10 after subtracting 42 from 52.
Bring next digit (8) of the dividend behind the 10 and repeat the process: 108 / 21

Step 3:
The number 21 fits into 108 5 times, leaving a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
If we take 105 away from 108, we end up with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 21

Let's proceed to step 4:
21 goes into 36 1 times with a remainder of 15.
The next digit of our result is 1. 
Result so far: 251.0
Subtract 21 from 36 to get 15.
Fetch the next digit (7) from the dividend, attach it to 15 and continue: 157 / 21

Let's proceed to step 5:
21 can be fit into 157 7 times, resulting in a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 2517.0
Deduct 147 from 157 and we're left with 10.
Include the next digit (4) from the dividend after 10, then repeat: 104 / 21

Advancing to step 6:
104 divided by 21 is 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 25174.0
Deduct 84 from 104 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 7:
21 can be fit into 200 9 times, resulting in a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 25174.9
Deduct 189 from 200 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 8:
If we divide 110 by 21, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 25174.95
The remainder is 5 after subtracting 105 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
50 divided by 21 is 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 25174.952
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
21 can be fit into 80 3 times, resulting in a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 25174.9523
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 11:
21 can be fit into 170 8 times, resulting in a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 25174.95238
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 12:
When dividing 20 by 21, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 25174.95238
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 13:
21 goes into 200 9 times with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 25174.9523809
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 14:
The number 21 fits into 110 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 25174.95238095
If we take 105 away from 110, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 25174.95238095, with a leftover of 5e-09.