Let's divide 72130618 by 813
The aim is to understand the frequency of 813 in 72130618.

On to step 1:
813 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 813

Step 2:
The number 813 fits into 72 0 times, leaving a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Fetch the next digit (1) from the dividend, attach it to 72 and continue: 721 / 813

Going ahead to step 3:
The number 813 fits into 721 0 times, leaving a remainder of 721.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 721, we end up with 721.
Append the next digit (3) from the dividend to 721 and continue with: 7213 / 813

Let's proceed to step 4:
813 goes into 7213 8 times with a remainder of 709.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 6504 from 7213 to get 709.
Take the next digit (0) from the dividend and append it to 709, then repeat: 7090 / 813

Moving on to step 5:
The number 813 fits into 7090 8 times, leaving a remainder of 586.
Write down 8 as next digit of the result. 
Result so far: 88.0
If we take 6504 away from 7090, we end up with 586.
Fetch the next digit (6) from the dividend, attach it to 586 and continue: 5866 / 813

Advancing to step 6:
813 goes into 5866 7 times with a remainder of 175.
Use 7 as the next digit of our solution. 
Result so far: 887.0
Subtracting 5691 from 5866 leaves us with 175.
Take the next digit (1) from the dividend and append it to 175, then repeat: 1751 / 813

Step 7:
813 goes into 1751 2 times with a remainder of 125.
Put 2 as the next digit of the answer. 
Result so far: 8872.0
The remainder is 125 after subtracting 1626 from 1751.
Include the next digit (8) from the dividend after 125, then repeat: 1258 / 813

Step 8:
When dividing 1258 by 813, we get 1 with a remainder of 445.
Write down 1 as next digit of the result. 
Result so far: 88721.0
If we subtract 813 from 1258, we get 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Let's proceed to step 9:
The number 813 fits into 4450 5 times, leaving a remainder of 385.
Put 5 as the next digit of the answer. 
Result so far: 88721.5
Subtracting 4065 from 4450 leaves us with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Advancing to step 10:
813 goes into 3850 4 times with a remainder of 598.
Write down 4 as next digit of the result. 
Result so far: 88721.54
If we subtract 3252 from 3850, we get 598.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5980, and continue the process.

Step 11:
If we divide 5980 by 813, we get 7 and a remainder of 289.
The next digit of our result is 7. 
Result so far: 88721.547
Subtract 5691 from 5980 to get 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

Moving on to step 12:
2890 divided by 813 is 3 with a remainder of 451.
Write down 3 as next digit of the result. 
Result so far: 88721.5473
The remainder is 451 after subtracting 2439 from 2890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4510, and continue the process.

Let's proceed to step 13:
4510 divided by 813 is 5 with a remainder of 445.
Use 5 as the next digit of our solution. 
Result so far: 88721.54735
The remainder is 445 after subtracting 4065 from 4510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Advancing to step 14:
4450 divided by 813 is 5 with a remainder of 385.
The number 5 becomes the next digit in our result. 
Result so far: 88721.547355
If we subtract 4065 from 4450, we get 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

The final outcome is 88721.547355, with a leftover of 3.85e-05.