We look at the division of 851810 by 37 
The aim is to understand the frequency of 37 in 851810.

Going ahead to step 1:
8 divided by 37 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 37

On to step 2:
When dividing 85 by 37, we get 2 with a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 74 from 85, we get 11.
Take the next digit (1) from the dividend and append it to 11, then repeat: 111 / 37

Moving on to step 3:
37 can be fit into 111 3 times, resulting in a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtract 111 from 111 to get 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 37

On to step 4:
37 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 230.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 37

Step 5:
37 can be fit into 81 2 times, resulting in a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 2302.0
If we take 74 away from 81, we end up with 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 37

On to step 6:
If we divide 70 by 37, we get 1 and a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 23021.0
Deduct 37 from 70 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 7:
The number 37 fits into 330 8 times, leaving a remainder of 34.
Record the quotient 8 as the next digit in the result. 
Result so far: 23021.8
Subtracting 296 from 330 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 8:
37 goes into 340 9 times with a remainder of 7.
The next digit of our result is 9. 
Result so far: 23021.89
Subtracting 333 from 340 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 9:
37 can be fit into 70 1 times, resulting in a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 23021.891
If we subtract 37 from 70, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 10:
When dividing 330 by 37, we get 8 with a remainder of 34.
Put 8 as the next digit of the answer. 
Result so far: 23021.8918
Subtract 296 from 330 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
When dividing 340 by 37, we get 9 with a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 23021.89189
If we take 333 away from 340, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 12:
70 divided by 37 is 1 with a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 23021.891891
Subtract 37 from 70 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 13:
If we divide 330 by 37, we get 8 and a remainder of 34.
The next digit of our result is 8. 
Result so far: 23021.8918918
If we subtract 296 from 330, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 14:
If we divide 340 by 37, we get 9 and a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 23021.89189189
Subtract 333 from 340 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

After the division, we end up with 23021.89189189 and a remainder of 7e-09.