402850 divided by 4 
We're looking to find how many times 4 goes into 402850.

Advancing to step 1:
4 can be fit into 4 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 4 from 4, we get 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 4

Let's proceed to step 2:
0 divided by 4 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 10.0
If we subtract 0 from 0, we get 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 4

Step 3:
2 divided by 4 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 100.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 4

Advancing to step 4:
The number 4 fits into 28 7 times, leaving a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 1007.0
The remainder is 0 after subtracting 28 from 28.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 4

Going ahead to step 5:
4 goes into 5 1 times with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 10071.0
Subtract 4 from 5 to get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 4

Step 6:
4 goes into 10 2 times with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 100712.0
If we take 8 away from 10, we end up 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.

Going ahead to step 7:
20 divided by 4 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 100712.5
The remainder is 0 after subtracting 20 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
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: 100712.5
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
4 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 100712.5
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.

The final outcome is 100712.5, with a leftover of 0.0.