We look at the division of 358590 by 37 
The aim is to understand the frequency of 37 in 358590.

On to step 1:
3 divided by 37 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 37

Step 2:
37 goes into 35 0 times with a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 35 and we're left with 35.
Fetch the next digit (8) from the dividend, attach it to 35 and continue: 358 / 37

Going ahead to step 3:
37 goes into 358 9 times with a remainder of 25.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 333 from 358 to get 25.
Include the next digit (5) from the dividend after 25, then repeat: 255 / 37

Advancing to step 4:
The number 37 fits into 255 6 times, leaving a remainder of 33.
The next digit of our result is 6. 
Result so far: 96.0
Subtracting 222 from 255 leaves us with 33.
Append the next digit (9) from the dividend to 33 and continue with: 339 / 37

Step 5:
37 goes into 339 9 times with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 969.0
The remainder is 6 after subtracting 333 from 339.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 37

On to step 6:
37 goes into 60 1 times with a remainder of 23.
Use 1 as the next digit of our solution. 
Result so far: 9691.0
Subtracting 37 from 60 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 7:
230 divided by 37 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 9691.6
If we subtract 222 from 230, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 8:
If we divide 80 by 37, we get 2 and a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 9691.62
The remainder is 6 after subtracting 74 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 9:
37 goes into 60 1 times with a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 9691.621
Deduct 37 from 60 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 10:
The number 37 fits into 230 6 times, leaving a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 9691.6216
If we subtract 222 from 230, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
80 divided by 37 is 2 with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 9691.62162
The remainder is 6 after subtracting 74 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 12:
If we divide 60 by 37, we get 1 and a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 9691.621621
Subtracting 37 from 60 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 13:
230 divided by 37 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 9691.6216216
Subtracting 222 from 230 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 14:
When dividing 80 by 37, we get 2 with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 9691.62162162
The remainder is 6 after subtracting 74 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 9691.62162162 with a remainder of 6e-09.