428540 ÷ 91 
Our goal is to divide 428540 by 91.

Advancing to step 1:
If we divide 4 by 91, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 91

Going ahead to step 2:
The number 91 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Bring next digit (8) of the dividend behind the 42 and repeat the process: 428 / 91

Step 3:
If we divide 428 by 91, we get 4 and a remainder of 64.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 64 after subtracting 364 from 428.
Append the next digit (5) from the dividend to 64 and continue with: 645 / 91

On to step 4:
If we divide 645 by 91, we get 7 and a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 47.0
Subtracting 637 from 645 leaves us with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 91

Going ahead to step 5:
If we divide 84 by 91, we get 0 and a remainder of 84.
Put 0 as the next digit of the answer. 
Result so far: 470.0
If we take 0 away from 84, we end up with 84.
Take the next digit (0) from the dividend and append it to 84, then repeat: 840 / 91

On to step 6:
91 can be fit into 840 9 times, resulting in a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 4709.0
If we subtract 819 from 840, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 7:
If we divide 210 by 91, we get 2 and a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 4709.2
Subtract 182 from 210 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 8:
The number 91 fits into 280 3 times, leaving a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 4709.23
Subtracting 273 from 280 leaves us 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 9:
91 can be fit into 70 0 times, resulting in a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 4709.23
If we subtract 0 from 70, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 10:
The number 91 fits into 700 7 times, leaving a remainder of 63.
Record the quotient 7 as the next digit in the result. 
Result so far: 4709.2307
Subtract 637 from 700 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 11:
630 divided by 91 is 6 with a remainder of 84.
Record the quotient 6 as the next digit in the result. 
Result so far: 4709.23076
Deduct 546 from 630 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 12:
91 can be fit into 840 9 times, resulting in a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 4709.230769
Subtracting 819 from 840 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 13:
91 goes into 210 2 times with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 4709.2307692
The remainder is 28 after subtracting 182 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 14:
The number 91 fits into 280 3 times, leaving a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 4709.23076923
Deduct 273 from 280 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.

In conclusion, the division gives 4709.23076923 with a balance of 7e-09.