90833431 ÷ 253 
The aim is to understand the frequency of 253 in 90833431.

Moving on to step 1:
9 divided by 253 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 253

Going ahead to step 2:
253 goes into 90 0 times with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Take the next digit (8) from the dividend and append it to 90, then repeat: 908 / 253

Going ahead to step 3:
The number 253 fits into 908 3 times, leaving a remainder of 149.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 759 from 908 and we're left with 149.
Take the next digit (3) from the dividend and append it to 149, then repeat: 1493 / 253

Let's proceed to step 4:
The number 253 fits into 1493 5 times, leaving a remainder of 228.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
The remainder is 228 after subtracting 1265 from 1493.
Bring next digit (3) of the dividend behind the 228 and repeat the process: 2283 / 253

On to step 5:
2283 divided by 253 is 9 with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 359.0
Subtract 2277 from 2283 to get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 253

Advancing to step 6:
If we divide 64 by 253, we get 0 and a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 3590.0
Subtract 0 from 64 to get 64.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 253

Advancing to step 7:
643 divided by 253 is 2 with a remainder of 137.
Put 2 as the next digit of the answer. 
Result so far: 35902.0
Subtracting 506 from 643 leaves us with 137.
Fetch the next digit (1) from the dividend, attach it to 137 and continue: 1371 / 253

Moving on to step 8:
If we divide 1371 by 253, we get 5 and a remainder of 106.
The next digit of our result is 5. 
Result so far: 359025.0
If we subtract 1265 from 1371, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Going ahead to step 9:
If we divide 1060 by 253, we get 4 and a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 359025.4
Subtracting 1012 from 1060 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
253 goes into 480 1 times with a remainder of 227.
The next digit of our result is 1. 
Result so far: 359025.41
Subtract 253 from 480 to get 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Going ahead to step 11:
If we divide 2270 by 253, we get 8 and a remainder of 246.
The number 8 becomes the next digit in our result. 
Result so far: 359025.418
If we subtract 2024 from 2270, we get 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Let's proceed to step 12:
2460 divided by 253 is 9 with a remainder of 183.
Write down 9 as next digit of the result. 
Result so far: 359025.4189
Deduct 2277 from 2460 and we're left with 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

Step 13:
When dividing 1830 by 253, we get 7 with a remainder of 59.
Write down 7 as next digit of the result. 
Result so far: 359025.41897
If we subtract 1771 from 1830, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 14:
253 goes into 590 2 times with a remainder of 84.
Use 2 as the next digit of our solution. 
Result so far: 359025.418972
If we subtract 506 from 590, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 15:
If we divide 840 by 253, we get 3 and a remainder of 81.
Record the quotient 3 as the next digit in the result. 
Result so far: 359025.4189723
If we take 759 away from 840, we end up with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Let's proceed to step 16:
If we divide 810 by 253, we get 3 and a remainder of 51.
The next digit of our result is 3. 
Result so far: 359025.41897233
The remainder is 51 after subtracting 759 from 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

After the division, we end up with 359025.41897233 and a remainder of 5.1e-08.