We divide 28169711 by 421
Our goal is to divide 28169711 by 421.

On to step 1:
2 divided by 421 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 421

Advancing to step 2:
The number 421 fits into 28 0 times, leaving a remainder of 28.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 28, we get 28.
Append the next digit (1) from the dividend to 28 and continue with: 281 / 421

Advancing to step 3:
421 goes into 281 0 times with a remainder of 281.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 281 to get 281.
Grab the next digit (6) from the dividend, add it to 281, then carry on: 2816 / 421

Step 4:
421 can be fit into 2816 6 times, resulting in a remainder of 290.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 2526 from 2816 to get 290.
Take the next digit (9) from the dividend and append it to 290, then repeat: 2909 / 421

Going ahead to step 5:
The number 421 fits into 2909 6 times, leaving a remainder of 383.
Put 6 as the next digit of the answer. 
Result so far: 66.0
The remainder is 383 after subtracting 2526 from 2909.
Append the next digit (7) from the dividend to 383 and continue with: 3837 / 421

Step 6:
When dividing 3837 by 421, we get 9 with a remainder of 48.
The next digit of our result is 9. 
Result so far: 669.0
Subtract 3789 from 3837 to get 48.
Fetch the next digit (1) from the dividend, attach it to 48 and continue: 481 / 421

Advancing to step 7:
421 goes into 481 1 times with a remainder of 60.
The number 1 becomes the next digit in our result. 
Result so far: 6691.0
If we take 421 away from 481, we end up with 60.
Include the next digit (1) from the dividend after 60, then repeat: 601 / 421

Let's proceed to step 8:
601 divided by 421 is 1 with a remainder of 180.
Use 1 as the next digit of our solution. 
Result so far: 66911.0
Subtracting 421 from 601 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 9:
421 can be fit into 1800 4 times, resulting in a remainder of 116.
Use 4 as the next digit of our solution. 
Result so far: 66911.4
Subtract 1684 from 1800 to get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Advancing to step 10:
421 can be fit into 1160 2 times, resulting in a remainder of 318.
The next digit of our result is 2. 
Result so far: 66911.42
Subtract 842 from 1160 to get 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Moving on to step 11:
421 can be fit into 3180 7 times, resulting in a remainder of 233.
Use 7 as the next digit of our solution. 
Result so far: 66911.427
Subtract 2947 from 3180 to get 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

On to step 12:
2330 divided by 421 is 5 with a remainder of 225.
Record the quotient 5 as the next digit in the result. 
Result so far: 66911.4275
If we subtract 2105 from 2330, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Let's proceed to step 13:
If we divide 2250 by 421, we get 5 and a remainder of 145.
Put 5 as the next digit of the answer. 
Result so far: 66911.42755
The remainder is 145 after subtracting 2105 from 2250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

The final result is 66911.42755 with a remainder of 0.000145.