28542561 ÷ 421 
We're looking to find how many times 421 goes into 28542561.

Moving on to step 1:
The number 421 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 421

Advancing to step 2:
The number 421 fits into 28 0 times, leaving a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 421

Step 3:
The number 421 fits into 285 0 times, leaving a remainder of 285.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 285, we end up with 285.
Grab the next digit (4) from the dividend, add it to 285, then carry on: 2854 / 421

Moving on to step 4:
421 can be fit into 2854 6 times, resulting in a remainder of 328.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 2526 away from 2854, we end up with 328.
Bring next digit (2) of the dividend behind the 328 and repeat the process: 3282 / 421

Moving on to step 5:
421 can be fit into 3282 7 times, resulting in a remainder of 335.
Write down 7 as next digit of the result. 
Result so far: 67.0
The remainder is 335 after subtracting 2947 from 3282.
Grab the next digit (5) from the dividend, add it to 335, then carry on: 3355 / 421

Advancing to step 6:
The number 421 fits into 3355 7 times, leaving a remainder of 408.
Record the quotient 7 as the next digit in the result. 
Result so far: 677.0
Deduct 2947 from 3355 and we're left with 408.
Include the next digit (6) from the dividend after 408, then repeat: 4086 / 421

Step 7:
421 goes into 4086 9 times with a remainder of 297.
The next digit of our result is 9. 
Result so far: 6779.0
If we take 3789 away from 4086, we end up with 297.
Take the next digit (1) from the dividend and append it to 297, then repeat: 2971 / 421

On to step 8:
When dividing 2971 by 421, we get 7 with a remainder of 24.
Use 7 as the next digit of our solution. 
Result so far: 67797.0
Subtract 2947 from 2971 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
421 goes into 240 0 times with a remainder of 240.
Use 0 as the next digit of our solution. 
Result so far: 67797.0
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 10:
2400 divided by 421 is 5 with a remainder of 295.
Use 5 as the next digit of our solution. 
Result so far: 67797.05
The remainder is 295 after subtracting 2105 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Moving on to step 11:
421 goes into 2950 7 times with a remainder of 3.
The next digit of our result is 7. 
Result so far: 67797.057
Subtract 2947 from 2950 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 12:
421 can be fit into 30 0 times, resulting in a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 67797.057
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 13:
The number 421 fits into 300 0 times, leaving a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 67797.057
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The quotient of the division is 67797.057, and the remainder is 0.0003.