We look at the division of 13404121 by 549 
Let's see how many times 549 fits into 13404121.

Let's proceed to step 1:
549 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 549

Moving on to step 2:
When dividing 13 by 549, we get 0 with a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 549

Step 3:
549 can be fit into 134 0 times, resulting in a remainder of 134.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 134 after subtracting 0 from 134.
Fetch the next digit (0) from the dividend, attach it to 134 and continue: 1340 / 549

Advancing to step 4:
1340 divided by 549 is 2 with a remainder of 242.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 1098 from 1340 and we're left with 242.
Append the next digit (4) from the dividend to 242 and continue with: 2424 / 549

Step 5:
2424 divided by 549 is 4 with a remainder of 228.
Put 4 as the next digit of the answer. 
Result so far: 24.0
If we take 2196 away from 2424, we end up with 228.
Fetch the next digit (1) from the dividend, attach it to 228 and continue: 2281 / 549

Moving on to step 6:
549 can be fit into 2281 4 times, resulting in a remainder of 85.
Record the quotient 4 as the next digit in the result. 
Result so far: 244.0
The remainder is 85 after subtracting 2196 from 2281.
Grab the next digit (2) from the dividend, add it to 85, then carry on: 852 / 549

Moving on to step 7:
549 goes into 852 1 times with a remainder of 303.
Write down 1 as next digit of the result. 
Result so far: 2441.0
Subtract 549 from 852 to get 303.
Grab the next digit (1) from the dividend, add it to 303, then carry on: 3031 / 549

Step 8:
If we divide 3031 by 549, we get 5 and a remainder of 286.
The number 5 becomes the next digit in our result. 
Result so far: 24415.0
Subtracting 2745 from 3031 leaves us with 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

On to step 9:
549 goes into 2860 5 times with a remainder of 115.
Put 5 as the next digit of the answer. 
Result so far: 24415.5
Subtracting 2745 from 2860 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Moving on to step 10:
If we divide 1150 by 549, we get 2 and a remainder of 52.
The next digit of our result is 2. 
Result so far: 24415.52
Deduct 1098 from 1150 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 11:
549 goes into 520 0 times with a remainder of 520.
Write down 0 as next digit of the result. 
Result so far: 24415.52
Subtract 0 from 520 to get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Advancing to step 12:
549 can be fit into 5200 9 times, resulting in a remainder of 259.
Record the quotient 9 as the next digit in the result. 
Result so far: 24415.5209
If we take 4941 away from 5200, we end up with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Going ahead to step 13:
The number 549 fits into 2590 4 times, leaving a remainder of 394.
The number 4 becomes the next digit in our result. 
Result so far: 24415.52094
Deduct 2196 from 2590 and we're left with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Going ahead to step 14:
When dividing 3940 by 549, we get 7 with a remainder of 97.
Record the quotient 7 as the next digit in the result. 
Result so far: 24415.520947
The remainder is 97 after subtracting 3843 from 3940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 15:
549 can be fit into 970 1 times, resulting in a remainder of 421.
Record the quotient 1 as the next digit in the result. 
Result so far: 24415.5209471
Subtracting 549 from 970 leaves us with 421.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4210, and continue the process.

Going ahead to step 16:
When dividing 4210 by 549, we get 7 with a remainder of 367.
Put 7 as the next digit of the answer. 
Result so far: 24415.52094717
Subtracting 3843 from 4210 leaves us with 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

After the division, we end up with 24415.52094717 and a remainder of 3.67e-07.