Let's divide 877375 by 21
Our goal is to divide 877375 by 21.

Advancing 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
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 21

On to step 2:
When dividing 87 by 21, we get 4 with a remainder of 3.
The next digit of our result is 4. 
Result so far: 4.0
If we take 84 away from 87, we end up with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 21

On to step 3:
21 goes into 37 1 times with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 41.0
Deduct 21 from 37 and we're left with 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 21

Moving on to step 4:
21 goes into 163 7 times with a remainder of 16.
The number 7 becomes the next digit in our result. 
Result so far: 417.0
Subtracting 147 from 163 leaves us with 16.
Bring next digit (7) of the dividend behind the 16 and repeat the process: 167 / 21

Step 5:
If we divide 167 by 21, we get 7 and a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 4177.0
The remainder is 20 after subtracting 147 from 167.
Include the next digit (5) from the dividend after 20, then repeat: 205 / 21

Step 6:
205 divided by 21 is 9 with a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 41779.0
If we subtract 189 from 205, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 7:
21 can be fit into 160 7 times, resulting in a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 41779.7
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 8:
21 can be fit into 130 6 times, resulting in a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 41779.76
The remainder is 4 after subtracting 126 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
40 divided by 21 is 1 with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 41779.761
Subtracting 21 from 40 leaves us 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.

Advancing to step 10:
If we divide 190 by 21, we get 9 and a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 41779.7619
Deduct 189 from 190 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 11:
If we divide 10 by 21, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 41779.7619
Subtract 0 from 10 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.

Let's proceed to step 12:
If we divide 100 by 21, we get 4 and a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 41779.761904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 13:
160 divided by 21 is 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 41779.7619047
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 14:
The number 21 fits into 130 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 41779.76190476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 41779.76190476 with a remainder of 4e-09.