We divide 400859 by 4
We want to divide 400859 by 4.

Step 1:
4 divided by 4 is 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 4 from 4 and we're left with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 4

Step 2:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 0, we end up with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 4

Let's proceed to step 3:
When dividing 0 by 4, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 100.0
If we subtract 0 from 0, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 4

Let's proceed to step 4:
8 divided by 4 is 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 1002.0
If we subtract 8 from 8, we get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 4

Let's proceed to step 5:
If we divide 5 by 4, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 10021.0
Deduct 4 from 5 and we're left with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 4

On to step 6:
4 can be fit into 19 4 times, resulting in a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 100214.0
Subtracting 16 from 19 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
4 goes into 30 7 times with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 100214.7
Deduct 28 from 30 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
When dividing 20 by 4, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 100214.75
Subtracting 20 from 20 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
0 divided by 4 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 100214.75
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
4 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 100214.75
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 100214.75, with a leftover of 0.0.