325668 ÷ 21 
We want to figure out the number of times 325668 can be divided by 21.

Step 1:
21 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 21

Going ahead to step 2:
When dividing 32 by 21, we get 1 with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 21 away from 32, we end up with 11.
Take the next digit (5) from the dividend and append it to 11, then repeat: 115 / 21

Going ahead to step 3:
115 divided by 21 is 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we subtract 105 from 115, we get 10.
Fetch the next digit (6) from the dividend, attach it to 10 and continue: 106 / 21

Going ahead to step 4:
If we divide 106 by 21, we get 5 and a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
Subtracting 105 from 106 leaves us with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 21

Going ahead to step 5:
If we divide 16 by 21, we get 0 and a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 1550.0
The remainder is 16 after subtracting 0 from 16.
Include the next digit (8) from the dividend after 16, then repeat: 168 / 21

Moving on to step 6:
21 goes into 168 8 times with a remainder of 0.
The next digit of our result is 8. 
Result so far: 15508.0
If we subtract 168 from 168, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
21 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 15508.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
0 divided by 21 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15508.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 15508.0, with a leftover of 0.0.