We're dividing 888660 by 21 
We're looking to find how many times 21 goes into 888660.

Moving on to step 1:
When dividing 8 by 21, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 21

On to step 2:
If we divide 88 by 21, we get 4 and a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 84 away from 88, we end up with 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 21

On to step 3:
The number 21 fits into 48 2 times, leaving a remainder of 6.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 6 after subtracting 42 from 48.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 21

Let's proceed to step 4:
66 divided by 21 is 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 423.0
Subtracting 63 from 66 leaves us with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 21

On to step 5:
36 divided by 21 is 1 with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 4231.0
If we take 21 away from 36, we end up with 15.
Bring next digit (0) of the dividend behind the 15 and repeat the process: 150 / 21

On to step 6:
When dividing 150 by 21, we get 7 with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 42317.0
Subtracting 147 from 150 leaves us with 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 7:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 42317.1
If we take 21 away from 30, 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.

Moving on to step 8:
When dividing 90 by 21, we get 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 42317.14
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.

Going ahead to step 9:
60 divided by 21 is 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 42317.142
Deduct 42 from 60 and we're left 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.

Going ahead to step 10:
180 divided by 21 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 42317.1428
The remainder is 12 after subtracting 168 from 180.
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 11:
The number 21 fits into 120 5 times, leaving a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 42317.14285
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 12:
The number 21 fits into 150 7 times, leaving a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 42317.142857
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 13:
The number 21 fits into 30 1 times, leaving a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 42317.1428571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 14:
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: 42317.14285714
If we take 84 away from 90, we end up 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.

Our division results in 42317.14285714 with a remaining 6e-09.