We're dividing 290120 by 31 
The aim is to understand the frequency of 31 in 290120.

Step 1:
2 divided by 31 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 31

Going ahead to step 2:
When dividing 29 by 31, we get 0 with a remainder of 29.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 29, we end up with 29.
Bring next digit (0) of the dividend behind the 29 and repeat the process: 290 / 31

Going ahead to step 3:
If we divide 290 by 31, we get 9 and a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 11 after subtracting 279 from 290.
Grab the next digit (1) from the dividend, add it to 11, then carry on: 111 / 31

Step 4:
31 goes into 111 3 times with a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 93.0
Subtract 93 from 111 to get 18.
Include the next digit (2) from the dividend after 18, then repeat: 182 / 31

Moving on to step 5:
182 divided by 31 is 5 with a remainder of 27.
Use 5 as the next digit of our solution. 
Result so far: 935.0
Subtract 155 from 182 to get 27.
Bring next digit (0) of the dividend behind the 27 and repeat the process: 270 / 31

Going ahead to step 6:
31 goes into 270 8 times with a remainder of 22.
The next digit of our result is 8. 
Result so far: 9358.0
The remainder is 22 after subtracting 248 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 7:
31 goes into 220 7 times with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 9358.7
Subtracting 217 from 220 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
31 can be fit into 30 0 times, resulting in a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 9358.7
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
31 can be fit into 300 9 times, resulting in a remainder of 21.
The next digit of our result is 9. 
Result so far: 9358.709
Subtracting 279 from 300 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 10:
31 goes into 210 6 times with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 9358.7096
Subtracting 186 from 210 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 11:
If we divide 240 by 31, we get 7 and a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 9358.70967
Subtracting 217 from 240 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 12:
When dividing 230 by 31, we get 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 9358.709677
If we subtract 217 from 230, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Our division results in 9358.709677 with a remaining 1.3e-06.