We're dividing 21169099 by 778 
The aim is to understand the frequency of 778 in 21169099.

Going ahead to step 1:
When dividing 2 by 778, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 778

Moving on to step 2:
When dividing 21 by 778, we get 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Append the next digit (1) from the dividend to 21 and continue with: 211 / 778

Step 3:
If we divide 211 by 778, we get 0 and a remainder of 211.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 211 after subtracting 0 from 211.
Append the next digit (6) from the dividend to 211 and continue with: 2116 / 778

Moving on to step 4:
The number 778 fits into 2116 2 times, leaving a remainder of 560.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1556 from 2116 leaves us with 560.
Take the next digit (9) from the dividend and append it to 560, then repeat: 5609 / 778

Going ahead to step 5:
When dividing 5609 by 778, we get 7 with a remainder of 163.
The next digit of our result is 7. 
Result so far: 27.0
Deduct 5446 from 5609 and we're left with 163.
Bring next digit (0) of the dividend behind the 163 and repeat the process: 1630 / 778

Moving on to step 6:
1630 divided by 778 is 2 with a remainder of 74.
Write down 2 as next digit of the result. 
Result so far: 272.0
Subtract 1556 from 1630 to get 74.
Bring next digit (9) of the dividend behind the 74 and repeat the process: 749 / 778

Step 7:
749 divided by 778 is 0 with a remainder of 749.
The number 0 becomes the next digit in our result. 
Result so far: 2720.0
Deduct 0 from 749 and we're left with 749.
Bring next digit (9) of the dividend behind the 749 and repeat the process: 7499 / 778

Going ahead to step 8:
The number 778 fits into 7499 9 times, leaving a remainder of 497.
Put 9 as the next digit of the answer. 
Result so far: 27209.0
If we subtract 7002 from 7499, we get 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

Step 9:
If we divide 4970 by 778, we get 6 and a remainder of 302.
Put 6 as the next digit of the answer. 
Result so far: 27209.6
Deduct 4668 from 4970 and we're left with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Let's proceed to step 10:
When dividing 3020 by 778, we get 3 with a remainder of 686.
The number 3 becomes the next digit in our result. 
Result so far: 27209.63
Deduct 2334 from 3020 and we're left with 686.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6860, and continue the process.

Going ahead to step 11:
The number 778 fits into 6860 8 times, leaving a remainder of 636.
The number 8 becomes the next digit in our result. 
Result so far: 27209.638
Deduct 6224 from 6860 and we're left with 636.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Going ahead to step 12:
The number 778 fits into 6360 8 times, leaving a remainder of 136.
Use 8 as the next digit of our solution. 
Result so far: 27209.6388
The remainder is 136 after subtracting 6224 from 6360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

After the division, we end up with 27209.6388 and a remainder of 0.00136.