21025370 divided by 824 
We want to divide 21025370 by 824.

On to step 1:
If we divide 2 by 824, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 824

Advancing to step 2:
824 goes into 21 0 times with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Bring next digit (0) of the dividend behind the 21 and repeat the process: 210 / 824

Moving on to step 3:
824 goes into 210 0 times with a remainder of 210.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 210 and we're left with 210.
Take the next digit (2) from the dividend and append it to 210, then repeat: 2102 / 824

Advancing to step 4:
If we divide 2102 by 824, we get 2 and a remainder of 454.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 1648 from 2102 leaves us with 454.
Fetch the next digit (5) from the dividend, attach it to 454 and continue: 4545 / 824

Moving on to step 5:
824 goes into 4545 5 times with a remainder of 425.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtracting 4120 from 4545 leaves us with 425.
Grab the next digit (3) from the dividend, add it to 425, then carry on: 4253 / 824

Moving on to step 6:
4253 divided by 824 is 5 with a remainder of 133.
The number 5 becomes the next digit in our result. 
Result so far: 255.0
If we take 4120 away from 4253, we end up with 133.
Grab the next digit (7) from the dividend, add it to 133, then carry on: 1337 / 824

Going ahead to step 7:
824 goes into 1337 1 times with a remainder of 513.
Put 1 as the next digit of the answer. 
Result so far: 2551.0
Subtracting 824 from 1337 leaves us with 513.
Grab the next digit (0) from the dividend, add it to 513, then carry on: 5130 / 824

Advancing to step 8:
If we divide 5130 by 824, we get 6 and a remainder of 186.
The next digit of our result is 6. 
Result so far: 25516.0
Subtract 4944 from 5130 to get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Moving on to step 9:
824 goes into 1860 2 times with a remainder of 212.
Record the quotient 2 as the next digit in the result. 
Result so far: 25516.2
If we subtract 1648 from 1860, we get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Going ahead to step 10:
When dividing 2120 by 824, we get 2 with a remainder of 472.
The next digit of our result is 2. 
Result so far: 25516.22
If we subtract 1648 from 2120, we get 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

After the division, we end up with 25516.22 and a remainder of 0.472.