421930 divided by 37 
The aim is to understand the frequency of 37 in 421930.

Step 1:
The number 37 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 37

Moving on to step 2:
If we divide 42 by 37, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 37 from 42, we get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 37

Advancing to step 3:
51 divided by 37 is 1 with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Deduct 37 from 51 and we're left with 14.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 37

Let's proceed to step 4:
If we divide 149 by 37, we get 4 and a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 114.0
The remainder is 1 after subtracting 148 from 149.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 37

Step 5:
37 goes into 13 0 times with a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 1140.0
If we subtract 0 from 13, we get 13.
Include the next digit (0) from the dividend after 13, then repeat: 130 / 37

On to step 6:
When dividing 130 by 37, we get 3 with a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 11403.0
Subtract 111 from 130 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
37 can be fit into 190 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 11403.5
The remainder is 5 after subtracting 185 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
50 divided by 37 is 1 with a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 11403.51
If we subtract 37 from 50, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 9:
When dividing 130 by 37, we get 3 with a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 11403.513
If we subtract 111 from 130, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 10:
The number 37 fits into 190 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 11403.5135
Subtracting 185 from 190 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 11:
37 goes into 50 1 times with a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 11403.51351
If we subtract 37 from 50, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 12:
If we divide 130 by 37, we get 3 and a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 11403.513513
If we subtract 111 from 130, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 13:
190 divided by 37 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 11403.5135135
If we subtract 185 from 190, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 14:
50 divided by 37 is 1 with a remainder of 13.
The next digit of our result is 1. 
Result so far: 11403.51351351
If we take 37 away from 50, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

In conclusion, the division gives 11403.51351351 with a balance of 1.3e-08.