We look at the division of 126515 by 37 
The aim is to understand the frequency of 37 in 126515.

Going ahead to step 1:
37 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 37

Advancing to step 2:
37 goes into 12 0 times with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 37

Advancing to step 3:
If we divide 126 by 37, we get 3 and a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 111 away from 126, we end up with 15.
Bring next digit (5) of the dividend behind the 15 and repeat the process: 155 / 37

On to step 4:
The number 37 fits into 155 4 times, leaving a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
Subtract 148 from 155 to get 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 37

Advancing to step 5:
37 can be fit into 71 1 times, resulting in a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 341.0
If we subtract 37 from 71, we get 34.
Grab the next digit (5) from the dividend, add it to 34, then carry on: 345 / 37

On to step 6:
The number 37 fits into 345 9 times, leaving a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 3419.0
If we take 333 away from 345, we end up 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 37 fits into 120 3 times, leaving a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 3419.3
Subtracting 111 from 120 leaves us 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.

Going ahead to step 8:
The number 37 fits into 90 2 times, leaving a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 3419.32
Deduct 74 from 90 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 9:
37 can be fit into 160 4 times, resulting in a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 3419.324
If we subtract 148 from 160, 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.

Going ahead to step 10:
When dividing 120 by 37, we get 3 with a remainder of 9.
The next digit of our result is 3. 
Result so far: 3419.3243
The remainder is 9 after subtracting 111 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 11:
If we divide 90 by 37, we get 2 and a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 3419.32432
Deduct 74 from 90 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 12:
The number 37 fits into 160 4 times, leaving a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 3419.324324
Subtract 148 from 160 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.

Advancing to step 13:
37 can be fit into 120 3 times, resulting in a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 3419.3243243
Subtract 111 from 120 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.

Let's proceed to step 14:
The number 37 fits into 90 2 times, leaving a remainder of 16.
The next digit of our result is 2. 
Result so far: 3419.32432432
Subtracting 74 from 90 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

In conclusion, the division gives 3419.32432432 with a balance of 1.6e-08.