Let's divide 21978294 by 852
We're looking to find how many times 852 goes into 21978294.

Advancing to step 1:
The number 852 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 852

Moving on to step 2:
21 divided by 852 is 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 852

Moving on to step 3:
The number 852 fits into 219 0 times, leaving a remainder of 219.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 219 to get 219.
Include the next digit (7) from the dividend after 219, then repeat: 2197 / 852

Advancing to step 4:
852 goes into 2197 2 times with a remainder of 493.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 1704 from 2197 to get 493.
Bring next digit (8) of the dividend behind the 493 and repeat the process: 4938 / 852

Let's proceed to step 5:
If we divide 4938 by 852, we get 5 and a remainder of 678.
Write down 5 as next digit of the result. 
Result so far: 25.0
The remainder is 678 after subtracting 4260 from 4938.
Grab the next digit (2) from the dividend, add it to 678, then carry on: 6782 / 852

Advancing to step 6:
The number 852 fits into 6782 7 times, leaving a remainder of 818.
The number 7 becomes the next digit in our result. 
Result so far: 257.0
Subtract 5964 from 6782 to get 818.
Fetch the next digit (9) from the dividend, attach it to 818 and continue: 8189 / 852

Going ahead to step 7:
852 goes into 8189 9 times with a remainder of 521.
The number 9 becomes the next digit in our result. 
Result so far: 2579.0
Subtracting 7668 from 8189 leaves us with 521.
Bring next digit (4) of the dividend behind the 521 and repeat the process: 5214 / 852

Going ahead to step 8:
If we divide 5214 by 852, we get 6 and a remainder of 102.
Put 6 as the next digit of the answer. 
Result so far: 25796.0
Deduct 5112 from 5214 and we're left with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Let's proceed to step 9:
852 goes into 1020 1 times with a remainder of 168.
Write down 1 as next digit of the result. 
Result so far: 25796.1
If we subtract 852 from 1020, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Going ahead to step 10:
The number 852 fits into 1680 1 times, leaving a remainder of 828.
The number 1 becomes the next digit in our result. 
Result so far: 25796.11
The remainder is 828 after subtracting 852 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8280, and continue the process.

The final result is 25796.11 with a remainder of 0.828.