84786198 ÷ 778 
The aim is to understand the frequency of 778 in 84786198.

On to step 1:
If we divide 8 by 778, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 778

Advancing to step 2:
778 can be fit into 84 0 times, resulting in a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 84, we get 84.
Append the next digit (7) from the dividend to 84 and continue with: 847 / 778

Going ahead to step 3:
When dividing 847 by 778, we get 1 with a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 778 from 847 and we're left with 69.
Include the next digit (8) from the dividend after 69, then repeat: 698 / 778

Let's proceed to step 4:
If we divide 698 by 778, we get 0 and a remainder of 698.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 698, we end up with 698.
Take the next digit (6) from the dividend and append it to 698, then repeat: 6986 / 778

Going ahead to step 5:
The number 778 fits into 6986 8 times, leaving a remainder of 762.
Record the quotient 8 as the next digit in the result. 
Result so far: 108.0
If we take 6224 away from 6986, we end up with 762.
Bring next digit (1) of the dividend behind the 762 and repeat the process: 7621 / 778

On to step 6:
778 can be fit into 7621 9 times, resulting in a remainder of 619.
Put 9 as the next digit of the answer. 
Result so far: 1089.0
Subtracting 7002 from 7621 leaves us with 619.
Grab the next digit (9) from the dividend, add it to 619, then carry on: 6199 / 778

On to step 7:
The number 778 fits into 6199 7 times, leaving a remainder of 753.
Use 7 as the next digit of our solution. 
Result so far: 10897.0
Subtracting 5446 from 6199 leaves us with 753.
Include the next digit (8) from the dividend after 753, then repeat: 7538 / 778

On to step 8:
If we divide 7538 by 778, we get 9 and a remainder of 536.
Write down 9 as next digit of the result. 
Result so far: 108979.0
Deduct 7002 from 7538 and we're left with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Moving on to step 9:
When dividing 5360 by 778, we get 6 with a remainder of 692.
Write down 6 as next digit of the result. 
Result so far: 108979.6
The remainder is 692 after subtracting 4668 from 5360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6920, and continue the process.

Going ahead to step 10:
The number 778 fits into 6920 8 times, leaving a remainder of 696.
Write down 8 as next digit of the result. 
Result so far: 108979.68
If we take 6224 away from 6920, we end up with 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Moving on to step 11:
6960 divided by 778 is 8 with a remainder of 736.
Write down 8 as next digit of the result. 
Result so far: 108979.688
Deduct 6224 from 6960 and we're left with 736.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7360, and continue the process.

After the division, we end up with 108979.688 and a remainder of 0.0736.