Let's divide 643913 by 37
The aim is to understand the frequency of 37 in 643913.

Going ahead to step 1:
When dividing 6 by 37, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 37

Step 2:
If we divide 64 by 37, we get 1 and a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 37 from 64 and we're left with 27.
Fetch the next digit (3) from the dividend, attach it to 27 and continue: 273 / 37

Let's proceed to step 3:
The number 37 fits into 273 7 times, leaving a remainder of 14.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtracting 259 from 273 leaves us with 14.
Bring next digit (9) of the dividend behind the 14 and repeat the process: 149 / 37

Going ahead to step 4:
37 goes into 149 4 times with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 174.0
The remainder is 1 after subtracting 148 from 149.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 37

On to step 5:
The number 37 fits into 11 0 times, leaving a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 1740.0
The remainder is 11 after subtracting 0 from 11.
Take the next digit (3) from the dividend and append it to 11, then repeat: 113 / 37

Moving on to step 6:
113 divided by 37 is 3 with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 17403.0
If we take 111 away from 113, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
20 divided by 37 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 17403.0
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
The number 37 fits into 200 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 17403.05
Deduct 185 from 200 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 9:
The number 37 fits into 150 4 times, leaving a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 17403.054
Subtract 148 from 150 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
37 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 17403.054
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
If we divide 200 by 37, we get 5 and a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 17403.05405
Deduct 185 from 200 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 12:
If we divide 150 by 37, we get 4 and a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 17403.054054
Subtract 148 from 150 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 13:
When dividing 20 by 37, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 17403.054054
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
37 goes into 200 5 times with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 17403.05405405
Subtracting 185 from 200 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 17403.05405405 with a remaining 1.5e-08.