7856420 ÷ 97 
The aim is to understand the frequency of 97 in 7856420.

Advancing to step 1:
97 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 97

Going ahead to step 2:
97 can be fit into 78 0 times, resulting in a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Bring next digit (5) of the dividend behind the 78 and repeat the process: 785 / 97

Advancing to step 3:
When dividing 785 by 97, we get 8 with a remainder of 9.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 776 from 785 leaves us with 9.
Append the next digit (6) from the dividend to 9 and continue with: 96 / 97

Let's proceed to step 4:
If we divide 96 by 97, we get 0 and a remainder of 96.
The next digit of our result is 0. 
Result so far: 80.0
Subtracting 0 from 96 leaves us with 96.
Include the next digit (4) from the dividend after 96, then repeat: 964 / 97

Step 5:
The number 97 fits into 964 9 times, leaving a remainder of 91.
The number 9 becomes the next digit in our result. 
Result so far: 809.0
Subtract 873 from 964 to get 91.
Include the next digit (2) from the dividend after 91, then repeat: 912 / 97

Moving on to step 6:
97 goes into 912 9 times with a remainder of 39.
Put 9 as the next digit of the answer. 
Result so far: 8099.0
Subtracting 873 from 912 leaves us with 39.
Bring next digit (0) of the dividend behind the 39 and repeat the process: 390 / 97

Advancing to step 7:
97 can be fit into 390 4 times, resulting in a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 80994.0
Subtract 388 from 390 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
97 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 80994.0
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
97 goes into 200 2 times with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 80994.02
If we subtract 194 from 200, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
The number 97 fits into 60 0 times, leaving a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 80994.02
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
97 can be fit into 600 6 times, resulting in a remainder of 18.
Write down 6 as next digit of the result. 
Result so far: 80994.0206
The remainder is 18 after subtracting 582 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 12:
180 divided by 97 is 1 with a remainder of 83.
The number 1 becomes the next digit in our result. 
Result so far: 80994.02061
If we take 97 away from 180, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 13:
97 goes into 830 8 times with a remainder of 54.
The number 8 becomes the next digit in our result. 
Result so far: 80994.020618
Deduct 776 from 830 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 14:
97 can be fit into 540 5 times, resulting in a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 80994.0206185
Deduct 485 from 540 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 15:
If we divide 550 by 97, we get 5 and a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 80994.02061855
Subtracting 485 from 550 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

In conclusion, the division gives 80994.02061855 with a balance of 6.5e-08.