591645 ÷ 37 
The aim is to understand the frequency of 37 in 591645.

Moving on to step 1:
The number 37 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 37

Let's proceed to step 2:
The number 37 fits into 59 1 times, leaving a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 37 from 59 leaves us with 22.
Bring next digit (1) of the dividend behind the 22 and repeat the process: 221 / 37

On to step 3:
221 divided by 37 is 5 with a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we subtract 185 from 221, we get 36.
Grab the next digit (6) from the dividend, add it to 36, then carry on: 366 / 37

On to step 4:
366 divided by 37 is 9 with a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 159.0
If we take 333 away from 366, we end up with 33.
Fetch the next digit (4) from the dividend, attach it to 33 and continue: 334 / 37

Advancing to step 5:
If we divide 334 by 37, we get 9 and a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 1599.0
If we subtract 333 from 334, we get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 37

Advancing to step 6:
If we divide 15 by 37, we get 0 and a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 15990.0
Subtract 0 from 15 to get 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 7:
37 can be fit into 150 4 times, resulting in a remainder of 2.
The next digit of our result is 4. 
Result so far: 15990.4
If we subtract 148 from 150, we 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.

Let's proceed to step 8:
20 divided by 37 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 15990.4
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 9:
200 divided by 37 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 15990.405
Subtract 185 from 200 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 10:
The number 37 fits into 150 4 times, leaving a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 15990.4054
If we subtract 148 from 150, we 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.

Moving on to step 11:
If we divide 20 by 37, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 15990.4054
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.

Advancing to step 12:
37 can be fit into 200 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 15990.405405
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.

On to step 13:
150 divided by 37 is 4 with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 15990.4054054
The remainder is 2 after subtracting 148 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 14:
37 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 15990.4054054
Subtracting 0 from 20 leaves us 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.

The final outcome is 15990.4054054, with a leftover of 2e-08.