We divide 593845 by 21
We want to figure out the number of times 593845 can be divided by 21.

Moving on to step 1:
21 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 21

Advancing to step 2:
21 can be fit into 59 2 times, resulting in a remainder of 17.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 42 away from 59, we end up with 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 21

Moving on to step 3:
21 goes into 173 8 times with a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 28.0
Deduct 168 from 173 and we're left with 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 21

Advancing to step 4:
When dividing 58 by 21, we get 2 with a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 282.0
The remainder is 16 after subtracting 42 from 58.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 21

Going ahead to step 5:
164 divided by 21 is 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 2827.0
Subtracting 147 from 164 leaves us with 17.
Grab the next digit (5) from the dividend, add it to 17, then carry on: 175 / 21

On to step 6:
175 divided by 21 is 8 with a remainder of 7.
The number 8 becomes the next digit in our result. 
Result so far: 28278.0
If we take 168 away from 175, 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.

Moving on to step 7:
21 goes into 70 3 times with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 28278.3
The remainder is 7 after subtracting 63 from 70.
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 8:
When dividing 70 by 21, we get 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 28278.33
If we subtract 63 from 70, we 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.

The final result is 28278.33 with a remainder of 0.007.