Let's divide 874901 by 21
We're looking to find how many times 21 goes into 874901.

Step 1:
8 divided by 21 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 21

Moving on to step 2:
The number 21 fits into 87 4 times, leaving a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 84 away from 87, we end up with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 21

Going ahead to step 3:
If we divide 34 by 21, we get 1 and a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 41.0
Subtracting 21 from 34 leaves us with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 21

Step 4:
When dividing 139 by 21, we get 6 with a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 416.0
Subtracting 126 from 139 leaves us with 13.
Grab the next digit (0) from the dividend, add it to 13, then carry on: 130 / 21

Let's proceed to step 5:
When dividing 130 by 21, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 4166.0
Deduct 126 from 130 and we're left with 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 21

Moving on to step 6:
The number 21 fits into 41 1 times, leaving a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 41661.0
If we take 21 away from 41, we end up 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.

Moving on to step 7:
If we divide 200 by 21, we get 9 and a remainder of 11.
The next digit of our result is 9. 
Result so far: 41661.9
Subtracting 189 from 200 leaves us 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.

Going ahead to step 8:
When dividing 110 by 21, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 41661.95
Subtracting 105 from 110 leaves us 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.

Going ahead to step 9:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 41661.952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
When dividing 80 by 21, we get 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 41661.9523
The remainder is 17 after subtracting 63 from 80.
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:
170 divided by 21 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 41661.95238
Deduct 168 from 170 and we're left 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.

On to step 12:
If we divide 20 by 21, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 41661.95238
If we take 0 away from 20, we end up 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 13:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 41661.9523809
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.

Let's proceed to step 14:
When dividing 110 by 21, we get 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 41661.95238095
Subtract 105 from 110 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 41661.95238095 with a remaining 5e-09.