76603665 ÷ 816 
The aim is to understand the frequency of 816 in 76603665.

Advancing to step 1:
When dividing 7 by 816, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (6) of the dividend behind the 7 and repeat the process: 76 / 816

Going ahead to step 2:
816 goes into 76 0 times with a remainder of 76.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 76 and we're left with 76.
Take the next digit (6) from the dividend and append it to 76, then repeat: 766 / 816

Step 3:
When dividing 766 by 816, we get 0 with a remainder of 766.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 766, we end up with 766.
Append the next digit (0) from the dividend to 766 and continue with: 7660 / 816

Advancing to step 4:
When dividing 7660 by 816, we get 9 with a remainder of 316.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 7344 from 7660 to get 316.
Fetch the next digit (3) from the dividend, attach it to 316 and continue: 3163 / 816

On to step 5:
3163 divided by 816 is 3 with a remainder of 715.
Use 3 as the next digit of our solution. 
Result so far: 93.0
If we subtract 2448 from 3163, we get 715.
Grab the next digit (6) from the dividend, add it to 715, then carry on: 7156 / 816

Going ahead to step 6:
816 goes into 7156 8 times with a remainder of 628.
The next digit of our result is 8. 
Result so far: 938.0
The remainder is 628 after subtracting 6528 from 7156.
Fetch the next digit (6) from the dividend, attach it to 628 and continue: 6286 / 816

Advancing to step 7:
816 goes into 6286 7 times with a remainder of 574.
Record the quotient 7 as the next digit in the result. 
Result so far: 9387.0
If we take 5712 away from 6286, we end up with 574.
Grab the next digit (5) from the dividend, add it to 574, then carry on: 5745 / 816

On to step 8:
If we divide 5745 by 816, we get 7 and a remainder of 33.
Record the quotient 7 as the next digit in the result. 
Result so far: 93877.0
Subtracting 5712 from 5745 leaves us 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.

Advancing to step 9:
816 goes into 330 0 times with a remainder of 330.
Write down 0 as next digit of the result. 
Result so far: 93877.0
Subtracting 0 from 330 leaves us with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Advancing to step 10:
3300 divided by 816 is 4 with a remainder of 36.
The next digit of our result is 4. 
Result so far: 93877.04
Deduct 3264 from 3300 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.

On to step 11:
816 can be fit into 360 0 times, resulting in a remainder of 360.
Write down 0 as next digit of the result. 
Result so far: 93877.04
If we subtract 0 from 360, we get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 12:
When dividing 3600 by 816, we get 4 with a remainder of 336.
Write down 4 as next digit of the result. 
Result so far: 93877.0404
The remainder is 336 after subtracting 3264 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Going ahead to step 13:
If we divide 3360 by 816, we get 4 and a remainder of 96.
Use 4 as the next digit of our solution. 
Result so far: 93877.04044
Subtracting 3264 from 3360 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

After the division, we end up with 93877.04044 and a remainder of 9.6e-05.