We're dividing 13909724 by 257 
Let's see how many times 257 fits into 13909724.

On to step 1:
When dividing 1 by 257, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 257

Going ahead to step 2:
257 goes into 13 0 times with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 257

Moving on to step 3:
257 goes into 139 0 times with a remainder of 139.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 139, we end up with 139.
Include the next digit (0) from the dividend after 139, then repeat: 1390 / 257

Step 4:
If we divide 1390 by 257, we get 5 and a remainder of 105.
Write down 5 as next digit of the result. 
Result so far: 5.0
The remainder is 105 after subtracting 1285 from 1390.
Take the next digit (9) from the dividend and append it to 105, then repeat: 1059 / 257

Advancing to step 5:
1059 divided by 257 is 4 with a remainder of 31.
Record the quotient 4 as the next digit in the result. 
Result so far: 54.0
The remainder is 31 after subtracting 1028 from 1059.
Include the next digit (7) from the dividend after 31, then repeat: 317 / 257

Advancing to step 6:
When dividing 317 by 257, we get 1 with a remainder of 60.
The number 1 becomes the next digit in our result. 
Result so far: 541.0
Subtracting 257 from 317 leaves us with 60.
Include the next digit (2) from the dividend after 60, then repeat: 602 / 257

On to step 7:
257 goes into 602 2 times with a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 5412.0
If we subtract 514 from 602, we get 88.
Append the next digit (4) from the dividend to 88 and continue with: 884 / 257

Advancing to step 8:
When dividing 884 by 257, we get 3 with a remainder of 113.
Put 3 as the next digit of the answer. 
Result so far: 54123.0
Subtracting 771 from 884 leaves us with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Step 9:
1130 divided by 257 is 4 with a remainder of 102.
The next digit of our result is 4. 
Result so far: 54123.4
The remainder is 102 after subtracting 1028 from 1130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Let's proceed to step 10:
1020 divided by 257 is 3 with a remainder of 249.
Record the quotient 3 as the next digit in the result. 
Result so far: 54123.43
Subtract 771 from 1020 to get 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Going ahead to step 11:
257 goes into 2490 9 times with a remainder of 177.
Put 9 as the next digit of the answer. 
Result so far: 54123.439
If we take 2313 away from 2490, we end up with 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

Let's proceed to step 12:
If we divide 1770 by 257, we get 6 and a remainder of 228.
The next digit of our result is 6. 
Result so far: 54123.4396
The remainder is 228 after subtracting 1542 from 1770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Moving on to step 13:
257 goes into 2280 8 times with a remainder of 224.
Use 8 as the next digit of our solution. 
Result so far: 54123.43968
Subtracting 2056 from 2280 leaves us with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Advancing to step 14:
If we divide 2240 by 257, we get 8 and a remainder of 184.
The number 8 becomes the next digit in our result. 
Result so far: 54123.439688
Subtracting 2056 from 2240 leaves us with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

The final outcome is 54123.439688, with a leftover of 1.84e-05.