We're dividing 85246 by 21 
We want to divide 85246 by 21.

Advancing to step 1:
The number 21 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 21

Step 2:
If we divide 85 by 21, we get 4 and a remainder of 1.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 1 after subtracting 84 from 85.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 21

Moving on to step 3:
If we divide 12 by 21, we get 0 and a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
Subtracting 0 from 12 leaves us with 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 21

Let's proceed to step 4:
The number 21 fits into 124 5 times, leaving a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 405.0
Subtracting 105 from 124 leaves us with 19.
Bring next digit (6) of the dividend behind the 19 and repeat the process: 196 / 21

Moving on to step 5:
196 divided by 21 is 9 with a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 4059.0
Subtract 189 from 196 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 6:
21 goes into 70 3 times with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 4059.3
Subtracting 63 from 70 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
21 goes into 70 3 times with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 4059.33
If we take 63 away from 70, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 4059.33 with a remaining 0.007.