We divide 938037 by 13
The aim is to understand the frequency of 13 in 938037.

Going ahead to step 1:
If we divide 9 by 13, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 13

On to step 2:
13 goes into 93 7 times with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we subtract 91 from 93, we get 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 13

Moving on to step 3:
If we divide 28 by 13, we get 2 and a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 72.0
Subtract 26 from 28 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 13

Step 4:
13 goes into 20 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 721.0
If we subtract 13 from 20, we get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 13

Moving on to step 5:
13 goes into 73 5 times with a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 7215.0
Subtract 65 from 73 to get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 13

Let's proceed to step 6:
When dividing 87 by 13, we get 6 with a remainder of 9.
The next digit of our result is 6. 
Result so far: 72156.0
Deduct 78 from 87 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
If we divide 90 by 13, we get 6 and a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 72156.6
Subtract 78 from 90 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
13 goes into 120 9 times with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 72156.69
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
The number 13 fits into 30 2 times, leaving a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 72156.692
The remainder is 4 after subtracting 26 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
If we divide 40 by 13, we get 3 and a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 72156.6923
Deduct 39 from 40 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 11:
If we divide 10 by 13, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 72156.6923
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 12:
If we divide 100 by 13, we get 7 and a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 72156.692307
Subtract 91 from 100 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 13:
When dividing 90 by 13, we get 6 with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 72156.6923076
If we subtract 78 from 90, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 14:
13 goes into 120 9 times with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 72156.69230769
Subtracting 117 from 120 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.

After the division, we end up with 72156.69230769 and a remainder of 3e-09.