We divide 428203 by 2
Our goal is to divide 428203 by 2.

Going ahead to step 1:
When dividing 4 by 2, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 4 from 4 leaves us with 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 2

On to step 2:
2 goes into 2 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 21.0
Subtract 2 from 2 to get 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 2

Advancing to step 3:
8 divided by 2 is 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 214.0
Subtracting 8 from 8 leaves us with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 2

Step 4:
If we divide 2 by 2, we get 1 and a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 2141.0
Deduct 2 from 2 and we're left with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 2

Going ahead to step 5:
If we divide 0 by 2, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 21410.0
If we subtract 0 from 0, we get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 2

Step 6:
The number 2 fits into 3 1 times, leaving a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 214101.0
Deduct 2 from 3 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
If we divide 10 by 2, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 214101.5
Subtract 10 from 10 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.

Advancing to step 8:
When dividing 0 by 2, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 214101.5
Subtracting 0 from 0 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.

Moving on to step 9:
0 divided by 2 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 214101.5
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 result is 214101.5 with a remainder of 0.0.