77022818 ÷ 921 
The aim is to understand the frequency of 921 in 77022818.

Step 1:
When dividing 7 by 921, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 921

Step 2:
The number 921 fits into 77 0 times, leaving a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Grab the next digit (0) from the dividend, add it to 77, then carry on: 770 / 921

Going ahead to step 3:
When dividing 770 by 921, we get 0 with a remainder of 770.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 770 and we're left with 770.
Include the next digit (2) from the dividend after 770, then repeat: 7702 / 921

Moving on to step 4:
If we divide 7702 by 921, we get 8 and a remainder of 334.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 7368 from 7702 to get 334.
Take the next digit (2) from the dividend and append it to 334, then repeat: 3342 / 921

Going ahead to step 5:
3342 divided by 921 is 3 with a remainder of 579.
Use 3 as the next digit of our solution. 
Result so far: 83.0
The remainder is 579 after subtracting 2763 from 3342.
Append the next digit (8) from the dividend to 579 and continue with: 5798 / 921

On to step 6:
921 goes into 5798 6 times with a remainder of 272.
Use 6 as the next digit of our solution. 
Result so far: 836.0
If we subtract 5526 from 5798, we get 272.
Include the next digit (1) from the dividend after 272, then repeat: 2721 / 921

Advancing to step 7:
When dividing 2721 by 921, we get 2 with a remainder of 879.
Record the quotient 2 as the next digit in the result. 
Result so far: 8362.0
The remainder is 879 after subtracting 1842 from 2721.
Include the next digit (8) from the dividend after 879, then repeat: 8798 / 921

Step 8:
The number 921 fits into 8798 9 times, leaving a remainder of 509.
Write down 9 as next digit of the result. 
Result so far: 83629.0
If we take 8289 away from 8798, we end up with 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Advancing to step 9:
921 goes into 5090 5 times with a remainder of 485.
Use 5 as the next digit of our solution. 
Result so far: 83629.5
The remainder is 485 after subtracting 4605 from 5090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

On to step 10:
The number 921 fits into 4850 5 times, leaving a remainder of 245.
Use 5 as the next digit of our solution. 
Result so far: 83629.55
If we take 4605 away from 4850, we end up with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

The final outcome is 83629.55, with a leftover of 0.245.