We're dividing 31991428 by 350 
The aim is to understand the frequency of 350 in 31991428.

Going ahead to step 1:
3 divided by 350 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 350

Moving on to step 2:
The number 350 fits into 31 0 times, leaving a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 31, we end up with 31.
Include the next digit (9) from the dividend after 31, then repeat: 319 / 350

Let's proceed to step 3:
When dividing 319 by 350, we get 0 with a remainder of 319.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 319 leaves us with 319.
Append the next digit (9) from the dividend to 319 and continue with: 3199 / 350

On to step 4:
3199 divided by 350 is 9 with a remainder of 49.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 3150 from 3199, we get 49.
Include the next digit (1) from the dividend after 49, then repeat: 491 / 350

Let's proceed to step 5:
350 goes into 491 1 times with a remainder of 141.
Use 1 as the next digit of our solution. 
Result so far: 91.0
If we take 350 away from 491, we end up with 141.
Fetch the next digit (4) from the dividend, attach it to 141 and continue: 1414 / 350

Step 6:
If we divide 1414 by 350, we get 4 and a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 914.0
If we subtract 1400 from 1414, we get 14.
Grab the next digit (2) from the dividend, add it to 14, then carry on: 142 / 350

On to step 7:
142 divided by 350 is 0 with a remainder of 142.
The next digit of our result is 0. 
Result so far: 9140.0
If we subtract 0 from 142, we get 142.
Grab the next digit (8) from the dividend, add it to 142, then carry on: 1428 / 350

Advancing to step 8:
If we divide 1428 by 350, we get 4 and a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 91404.0
Subtracting 1400 from 1428 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
When dividing 280 by 350, we get 0 with a remainder of 280.
Use 0 as the next digit of our solution. 
Result so far: 91404.0
Subtracting 0 from 280 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 10:
If we divide 2800 by 350, we get 8 and a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 91404.08
Deduct 2800 from 2800 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
350 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 91404.08
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 12:
0 divided by 350 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 91404.08
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 91404.08 with a remaining 0.0.