We look at the division of 846055 by 21 
Let's see how many times 21 fits into 846055.

Moving on to step 1:
When dividing 8 by 21, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 21

Step 2:
21 goes into 84 4 times with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 84 from 84 and we're left with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 21

Step 3:
When dividing 6 by 21, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 40.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 21

Advancing to step 4:
21 goes into 60 2 times with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 402.0
Subtract 42 from 60 to get 18.
Fetch the next digit (5) from the dividend, attach it to 18 and continue: 185 / 21

On to step 5:
The number 21 fits into 185 8 times, leaving a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 4028.0
Subtracting 168 from 185 leaves us with 17.
Bring next digit (5) of the dividend behind the 17 and repeat the process: 175 / 21

Step 6:
If we divide 175 by 21, we get 8 and a remainder of 7.
Use 8 as the next digit of our solution. 
Result so far: 40288.0
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.

Going ahead to step 7:
70 divided by 21 is 3 with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 40288.3
Deduct 63 from 70 and we're left 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.

Let's proceed to step 8:
70 divided by 21 is 3 with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 40288.33
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.

The final outcome is 40288.33, with a leftover of 0.007.