We look at the division of 13937280 by 923 
The aim is to understand the frequency of 923 in 13937280.

On to step 1:
923 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 923

Step 2:
923 can be fit into 13 0 times, resulting in a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 923

Advancing to step 3:
139 divided by 923 is 0 with a remainder of 139.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 139 leaves us with 139.
Append the next digit (3) from the dividend to 139 and continue with: 1393 / 923

Advancing to step 4:
923 can be fit into 1393 1 times, resulting in a remainder of 470.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 923 from 1393, we get 470.
Bring next digit (7) of the dividend behind the 470 and repeat the process: 4707 / 923

Moving on to step 5:
When dividing 4707 by 923, we get 5 with a remainder of 92.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we subtract 4615 from 4707, we get 92.
Append the next digit (2) from the dividend to 92 and continue with: 922 / 923

Advancing to step 6:
923 goes into 922 0 times with a remainder of 922.
The number 0 becomes the next digit in our result. 
Result so far: 150.0
If we take 0 away from 922, we end up with 922.
Take the next digit (8) from the dividend and append it to 922, then repeat: 9228 / 923

Moving on to step 7:
923 goes into 9228 9 times with a remainder of 921.
Use 9 as the next digit of our solution. 
Result so far: 1509.0
The remainder is 921 after subtracting 8307 from 9228.
Take the next digit (0) from the dividend and append it to 921, then repeat: 9210 / 923

Advancing to step 8:
923 goes into 9210 9 times with a remainder of 903.
The number 9 becomes the next digit in our result. 
Result so far: 15099.0
The remainder is 903 after subtracting 8307 from 9210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9030, and continue the process.

On to step 9:
9030 divided by 923 is 9 with a remainder of 723.
The next digit of our result is 9. 
Result so far: 15099.9
If we subtract 8307 from 9030, we get 723.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7230, and continue the process.

Let's proceed to step 10:
7230 divided by 923 is 7 with a remainder of 769.
Put 7 as the next digit of the answer. 
Result so far: 15099.97
If we subtract 6461 from 7230, we get 769.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7690, and continue the process.

Let's proceed to step 11:
The number 923 fits into 7690 8 times, leaving a remainder of 306.
Use 8 as the next digit of our solution. 
Result so far: 15099.978
Deduct 7384 from 7690 and we're left with 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Moving on to step 12:
When dividing 3060 by 923, we get 3 with a remainder of 291.
Use 3 as the next digit of our solution. 
Result so far: 15099.9783
If we take 2769 away from 3060, we end up with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Moving on to step 13:
The number 923 fits into 2910 3 times, leaving a remainder of 141.
Put 3 as the next digit of the answer. 
Result so far: 15099.97833
The remainder is 141 after subtracting 2769 from 2910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

The final outcome is 15099.97833, with a leftover of 0.000141.