We look at the division of 72251613 by 37 
The aim is to understand the frequency of 37 in 72251613.

Step 1:
37 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 37

Moving on to step 2:
If we divide 72 by 37, we get 1 and a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 37 from 72 and we're left with 35.
Fetch the next digit (2) from the dividend, attach it to 35 and continue: 352 / 37

On to step 3:
37 goes into 352 9 times with a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we take 333 away from 352, we end up with 19.
Include the next digit (5) from the dividend after 19, then repeat: 195 / 37

Let's proceed to step 4:
When dividing 195 by 37, we get 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 195.0
Subtracting 185 from 195 leaves us with 10.
Bring next digit (1) of the dividend behind the 10 and repeat the process: 101 / 37

On to step 5:
37 goes into 101 2 times with a remainder of 27.
Put 2 as the next digit of the answer. 
Result so far: 1952.0
Subtract 74 from 101 to get 27.
Take the next digit (6) from the dividend and append it to 27, then repeat: 276 / 37

Step 6:
When dividing 276 by 37, we get 7 with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 19527.0
Deduct 259 from 276 and we're left with 17.
Include the next digit (1) from the dividend after 17, then repeat: 171 / 37

Going ahead to step 7:
37 goes into 171 4 times with a remainder of 23.
Put 4 as the next digit of the answer. 
Result so far: 195274.0
Subtract 148 from 171 to get 23.
Fetch the next digit (3) from the dividend, attach it to 23 and continue: 233 / 37

Moving on to step 8:
233 divided by 37 is 6 with a remainder of 11.
The number 6 becomes the next digit in our result. 
Result so far: 1952746.0
If we take 222 away from 233, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
110 divided by 37 is 2 with a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 1952746.2
If we subtract 74 from 110, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 10:
37 goes into 360 9 times with a remainder of 27.
Record the quotient 9 as the next digit in the result. 
Result so far: 1952746.29
Deduct 333 from 360 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 11:
37 goes into 270 7 times with a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 1952746.297
Subtract 259 from 270 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 12:
If we divide 110 by 37, we get 2 and a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 1952746.2972
Subtract 74 from 110 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 13:
When dividing 360 by 37, we get 9 with a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 1952746.29729
If we subtract 333 from 360, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 14:
The number 37 fits into 270 7 times, leaving a remainder of 11.
The number 7 becomes the next digit in our result. 
Result so far: 1952746.297297
Deduct 259 from 270 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 15:
If we divide 110 by 37, we get 2 and a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 1952746.2972972
Deduct 74 from 110 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 16:
37 can be fit into 360 9 times, resulting in a remainder of 27.
Write down 9 as next digit of the result. 
Result so far: 1952746.29729729
If we subtract 333 from 360, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The quotient of the division is 1952746.29729729, and the remainder is 2.7e-08.