We look at the division of 17121555 by 253 
Let's see how many times 253 fits into 17121555.

Let's proceed to step 1:
When dividing 1 by 253, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 253

Going ahead to step 2:
17 divided by 253 is 0 with a remainder of 17.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 253

On to step 3:
253 goes into 171 0 times with a remainder of 171.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 171 to get 171.
Fetch the next digit (2) from the dividend, attach it to 171 and continue: 1712 / 253

On to step 4:
1712 divided by 253 is 6 with a remainder of 194.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 194 after subtracting 1518 from 1712.
Bring next digit (1) of the dividend behind the 194 and repeat the process: 1941 / 253

Let's proceed to step 5:
1941 divided by 253 is 7 with a remainder of 170.
The number 7 becomes the next digit in our result. 
Result so far: 67.0
The remainder is 170 after subtracting 1771 from 1941.
Grab the next digit (5) from the dividend, add it to 170, then carry on: 1705 / 253

On to step 6:
253 can be fit into 1705 6 times, resulting in a remainder of 187.
The number 6 becomes the next digit in our result. 
Result so far: 676.0
If we subtract 1518 from 1705, we get 187.
Bring next digit (5) of the dividend behind the 187 and repeat the process: 1875 / 253

Let's proceed to step 7:
When dividing 1875 by 253, we get 7 with a remainder of 104.
Write down 7 as next digit of the result. 
Result so far: 6767.0
Subtract 1771 from 1875 to get 104.
Bring next digit (5) of the dividend behind the 104 and repeat the process: 1045 / 253

On to step 8:
If we divide 1045 by 253, we get 4 and a remainder of 33.
Write down 4 as next digit of the result. 
Result so far: 67674.0
If we take 1012 away from 1045, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 9:
The number 253 fits into 330 1 times, leaving a remainder of 77.
Put 1 as the next digit of the answer. 
Result so far: 67674.1
Deduct 253 from 330 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 10:
If we divide 770 by 253, we get 3 and a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 67674.13
If we subtract 759 from 770, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 11:
If we divide 110 by 253, we get 0 and a remainder of 110.
Put 0 as the next digit of the answer. 
Result so far: 67674.13
If we subtract 0 from 110, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 12:
1100 divided by 253 is 4 with a remainder of 88.
The next digit of our result is 4. 
Result so far: 67674.1304
Deduct 1012 from 1100 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 13:
880 divided by 253 is 3 with a remainder of 121.
Write down 3 as next digit of the result. 
Result so far: 67674.13043
The remainder is 121 after subtracting 759 from 880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Advancing to step 14:
If we divide 1210 by 253, we get 4 and a remainder of 198.
Use 4 as the next digit of our solution. 
Result so far: 67674.130434
If we take 1012 away from 1210, we end up with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Going ahead to step 15:
253 goes into 1980 7 times with a remainder of 209.
Write down 7 as next digit of the result. 
Result so far: 67674.1304347
If we take 1771 away from 1980, we end up with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Going ahead to step 16:
When dividing 2090 by 253, we get 8 with a remainder of 66.
Write down 8 as next digit of the result. 
Result so far: 67674.13043478
The remainder is 66 after subtracting 2024 from 2090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

In conclusion, the division gives 67674.13043478 with a balance of 6.6e-08.