We're dividing 21278973 by 835 
We want to figure out the number of times 21278973 can be divided by 835.

Advancing to step 1:
835 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 835

Advancing to step 2:
835 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 835

Going ahead to step 3:
If we divide 212 by 835, we get 0 and a remainder of 212.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 212, we end up with 212.
Append the next digit (7) from the dividend to 212 and continue with: 2127 / 835

On to step 4:
835 goes into 2127 2 times with a remainder of 457.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1670 from 2127 leaves us with 457.
Include the next digit (8) from the dividend after 457, then repeat: 4578 / 835

Step 5:
835 goes into 4578 5 times with a remainder of 403.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtracting 4175 from 4578 leaves us with 403.
Append the next digit (9) from the dividend to 403 and continue with: 4039 / 835

Moving on to step 6:
If we divide 4039 by 835, we get 4 and a remainder of 699.
Write down 4 as next digit of the result. 
Result so far: 254.0
If we subtract 3340 from 4039, we get 699.
Grab the next digit (7) from the dividend, add it to 699, then carry on: 6997 / 835

Moving on to step 7:
When dividing 6997 by 835, we get 8 with a remainder of 317.
Use 8 as the next digit of our solution. 
Result so far: 2548.0
The remainder is 317 after subtracting 6680 from 6997.
Grab the next digit (3) from the dividend, add it to 317, then carry on: 3173 / 835

Advancing to step 8:
835 can be fit into 3173 3 times, resulting in a remainder of 668.
Record the quotient 3 as the next digit in the result. 
Result so far: 25483.0
Subtracting 2505 from 3173 leaves us with 668.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6680, and continue the process.

Let's proceed to step 9:
When dividing 6680 by 835, we get 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 25483.8
If we take 6680 away from 6680, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
When dividing 0 by 835, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25483.8
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.

On to step 11:
If we divide 0 by 835, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25483.8
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.

After the division, we end up with 25483.8 and a remainder of 0.0.