We divide 697760 by 31
The aim is to understand the frequency of 31 in 697760.

On to step 1:
6 divided by 31 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 31

Step 2:
If we divide 69 by 31, we get 2 and a remainder of 7.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 62 from 69 to get 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 31

Let's proceed to step 3:
77 divided by 31 is 2 with a remainder of 15.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Subtracting 62 from 77 leaves us with 15.
Bring next digit (7) of the dividend behind the 15 and repeat the process: 157 / 31

On to step 4:
If we divide 157 by 31, we get 5 and a remainder of 2.
Put 5 as the next digit of the answer. 
Result so far: 225.0
If we subtract 155 from 157, we get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 31

Going ahead to step 5:
If we divide 26 by 31, we get 0 and a remainder of 26.
The next digit of our result is 0. 
Result so far: 2250.0
If we take 0 away from 26, we end up with 26.
Bring next digit (0) of the dividend behind the 26 and repeat the process: 260 / 31

Moving on to step 6:
The number 31 fits into 260 8 times, leaving a remainder of 12.
The next digit of our result is 8. 
Result so far: 22508.0
Deduct 248 from 260 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
The number 31 fits into 120 3 times, leaving a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 22508.3
Deduct 93 from 120 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 8:
31 goes into 270 8 times with a remainder of 22.
The next digit of our result is 8. 
Result so far: 22508.38
Subtract 248 from 270 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 9:
If we divide 220 by 31, we get 7 and a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 22508.387
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.

On to step 10:
31 goes into 30 0 times with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 22508.387
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 11:
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: 22508.38709
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 12:
31 goes into 210 6 times with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 22508.387096
Deduct 186 from 210 and we're left 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 13:
If we divide 240 by 31, we get 7 and a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 22508.3870967
Subtract 217 from 240 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 14:
31 goes into 230 7 times with a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 22508.38709677
The remainder is 13 after subtracting 217 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

After the division, we end up with 22508.38709677 and a remainder of 1.3e-08.