We look at the division of 7905620 by 818 
The aim is to understand the frequency of 818 in 7905620.

Step 1:
When dividing 7 by 818, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 818

Step 2:
79 divided by 818 is 0 with a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 79 after subtracting 0 from 79.
Append the next digit (0) from the dividend to 79 and continue with: 790 / 818

On to step 3:
If we divide 790 by 818, we get 0 and a remainder of 790.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 790 after subtracting 0 from 790.
Take the next digit (5) from the dividend and append it to 790, then repeat: 7905 / 818

Advancing to step 4:
The number 818 fits into 7905 9 times, leaving a remainder of 543.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 7362 from 7905, we get 543.
Fetch the next digit (6) from the dividend, attach it to 543 and continue: 5436 / 818

Let's proceed to step 5:
When dividing 5436 by 818, we get 6 with a remainder of 528.
Write down 6 as next digit of the result. 
Result so far: 96.0
Subtract 4908 from 5436 to get 528.
Include the next digit (2) from the dividend after 528, then repeat: 5282 / 818

On to step 6:
If we divide 5282 by 818, we get 6 and a remainder of 374.
The number 6 becomes the next digit in our result. 
Result so far: 966.0
Deduct 4908 from 5282 and we're left with 374.
Fetch the next digit (0) from the dividend, attach it to 374 and continue: 3740 / 818

Let's proceed to step 7:
3740 divided by 818 is 4 with a remainder of 468.
Record the quotient 4 as the next digit in the result. 
Result so far: 9664.0
If we subtract 3272 from 3740, we get 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Step 8:
818 can be fit into 4680 5 times, resulting in a remainder of 590.
Put 5 as the next digit of the answer. 
Result so far: 9664.5
Subtract 4090 from 4680 to get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Step 9:
The number 818 fits into 5900 7 times, leaving a remainder of 174.
Use 7 as the next digit of our solution. 
Result so far: 9664.57
If we subtract 5726 from 5900, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 10:
When dividing 1740 by 818, we get 2 with a remainder of 104.
The number 2 becomes the next digit in our result. 
Result so far: 9664.572
The remainder is 104 after subtracting 1636 from 1740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Going ahead to step 11:
818 can be fit into 1040 1 times, resulting in a remainder of 222.
Put 1 as the next digit of the answer. 
Result so far: 9664.5721
Deduct 818 from 1040 and we're left with 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Let's proceed to step 12:
818 can be fit into 2220 2 times, resulting in a remainder of 584.
Use 2 as the next digit of our solution. 
Result so far: 9664.57212
The remainder is 584 after subtracting 1636 from 2220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Advancing to step 13:
818 goes into 5840 7 times with a remainder of 114.
Record the quotient 7 as the next digit in the result. 
Result so far: 9664.572127
If we take 5726 away from 5840, we end up with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Step 14:
818 can be fit into 1140 1 times, resulting in a remainder of 322.
Write down 1 as next digit of the result. 
Result so far: 9664.5721271
Subtract 818 from 1140 to get 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

Advancing to step 15:
818 goes into 3220 3 times with a remainder of 766.
Use 3 as the next digit of our solution. 
Result so far: 9664.57212713
If we take 2454 away from 3220, we end up with 766.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7660, and continue the process.

Our division results in 9664.57212713 with a remaining 7.66e-07.