Let's divide 97021078 by 77
The aim is to understand the frequency of 77 in 97021078.

Going ahead to step 1:
When dividing 9 by 77, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 77

Step 2:
77 can be fit into 97 1 times, resulting in a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 77 from 97 leaves us with 20.
Grab the next digit (0) from the dividend, add it to 20, then carry on: 200 / 77

Let's proceed to step 3:
200 divided by 77 is 2 with a remainder of 46.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 154 from 200 and we're left with 46.
Append the next digit (2) from the dividend to 46 and continue with: 462 / 77

Step 4:
The number 77 fits into 462 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 126.0
Deduct 462 from 462 and we're left with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 77

Advancing to step 5:
77 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 1260.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 77

Advancing to step 6:
If we divide 10 by 77, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 12600.0
The remainder is 10 after subtracting 0 from 10.
Take the next digit (7) from the dividend and append it to 10, then repeat: 107 / 77

Step 7:
77 can be fit into 107 1 times, resulting in a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 126001.0
Deduct 77 from 107 and we're left with 30.
Take the next digit (8) from the dividend and append it to 30, then repeat: 308 / 77

Going ahead to step 8:
77 goes into 308 4 times with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 1260014.0
The remainder is 0 after subtracting 308 from 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
77 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1260014.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
When dividing 0 by 77, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1260014.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 1260014.0 and a remainder of 0.0.