15445843 ÷ 421 
We want to divide 15445843 by 421.

Moving on to step 1:
421 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 421

Moving on to step 2:
If we divide 15 by 421, we get 0 and a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Include the next digit (4) from the dividend after 15, then repeat: 154 / 421

Let's proceed to step 3:
When dividing 154 by 421, we get 0 with a remainder of 154.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 154 and we're left with 154.
Fetch the next digit (4) from the dividend, attach it to 154 and continue: 1544 / 421

Going ahead to step 4:
If we divide 1544 by 421, we get 3 and a remainder of 281.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 281 after subtracting 1263 from 1544.
Grab the next digit (5) from the dividend, add it to 281, then carry on: 2815 / 421

On to step 5:
421 can be fit into 2815 6 times, resulting in a remainder of 289.
Put 6 as the next digit of the answer. 
Result so far: 36.0
If we take 2526 away from 2815, we end up with 289.
Grab the next digit (8) from the dividend, add it to 289, then carry on: 2898 / 421

Moving on to step 6:
421 goes into 2898 6 times with a remainder of 372.
Use 6 as the next digit of our solution. 
Result so far: 366.0
Subtract 2526 from 2898 to get 372.
Grab the next digit (4) from the dividend, add it to 372, then carry on: 3724 / 421

Going ahead to step 7:
3724 divided by 421 is 8 with a remainder of 356.
Use 8 as the next digit of our solution. 
Result so far: 3668.0
Subtracting 3368 from 3724 leaves us with 356.
Include the next digit (3) from the dividend after 356, then repeat: 3563 / 421

Going ahead to step 8:
3563 divided by 421 is 8 with a remainder of 195.
Put 8 as the next digit of the answer. 
Result so far: 36688.0
Deduct 3368 from 3563 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Going ahead to step 9:
421 goes into 1950 4 times with a remainder of 266.
Record the quotient 4 as the next digit in the result. 
Result so far: 36688.4
Subtracting 1684 from 1950 leaves us with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

On to step 10:
When dividing 2660 by 421, we get 6 with a remainder of 134.
Write down 6 as next digit of the result. 
Result so far: 36688.46
The remainder is 134 after subtracting 2526 from 2660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Going ahead to step 11:
421 can be fit into 1340 3 times, resulting in a remainder of 77.
Use 3 as the next digit of our solution. 
Result so far: 36688.463
If we subtract 1263 from 1340, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 12:
When dividing 770 by 421, we get 1 with a remainder of 349.
Use 1 as the next digit of our solution. 
Result so far: 36688.4631
Subtracting 421 from 770 leaves us with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

On to step 13:
The number 421 fits into 3490 8 times, leaving a remainder of 122.
Put 8 as the next digit of the answer. 
Result so far: 36688.46318
If we subtract 3368 from 3490, we get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Step 14:
When dividing 1220 by 421, we get 2 with a remainder of 378.
Put 2 as the next digit of the answer. 
Result so far: 36688.463182
Subtract 842 from 1220 to get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Going ahead to step 15:
When dividing 3780 by 421, we get 8 with a remainder of 412.
The number 8 becomes the next digit in our result. 
Result so far: 36688.4631828
The remainder is 412 after subtracting 3368 from 3780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Going ahead to step 16:
The number 421 fits into 4120 9 times, leaving a remainder of 331.
The number 9 becomes the next digit in our result. 
Result so far: 36688.46318289
Deduct 3789 from 4120 and we're left with 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

The quotient of the division is 36688.46318289, and the remainder is 3.31e-07.