65345120 ÷ 978 
The aim is to understand the frequency of 978 in 65345120.

Step 1:
If we divide 6 by 978, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 978

Going ahead to step 2:
When dividing 65 by 978, we get 0 with a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 65, we get 65.
Append the next digit (3) from the dividend to 65 and continue with: 653 / 978

Moving on to step 3:
978 can be fit into 653 0 times, resulting in a remainder of 653.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 653 after subtracting 0 from 653.
Append the next digit (4) from the dividend to 653 and continue with: 6534 / 978

Going ahead to step 4:
The number 978 fits into 6534 6 times, leaving a remainder of 666.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 5868 from 6534 and we're left with 666.
Grab the next digit (5) from the dividend, add it to 666, then carry on: 6665 / 978

Step 5:
978 can be fit into 6665 6 times, resulting in a remainder of 797.
Use 6 as the next digit of our solution. 
Result so far: 66.0
Deduct 5868 from 6665 and we're left with 797.
Include the next digit (1) from the dividend after 797, then repeat: 7971 / 978

On to step 6:
7971 divided by 978 is 8 with a remainder of 147.
The next digit of our result is 8. 
Result so far: 668.0
If we take 7824 away from 7971, we end up with 147.
Bring next digit (2) of the dividend behind the 147 and repeat the process: 1472 / 978

Let's proceed to step 7:
The number 978 fits into 1472 1 times, leaving a remainder of 494.
Record the quotient 1 as the next digit in the result. 
Result so far: 6681.0
If we take 978 away from 1472, we end up with 494.
Append the next digit (0) from the dividend to 494 and continue with: 4940 / 978

Advancing to step 8:
4940 divided by 978 is 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 66815.0
The remainder is 50 after subtracting 4890 from 4940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
978 goes into 500 0 times with a remainder of 500.
The next digit of our result is 0. 
Result so far: 66815.0
Subtract 0 from 500 to get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 10:
The number 978 fits into 5000 5 times, leaving a remainder of 110.
Use 5 as the next digit of our solution. 
Result so far: 66815.05
Deduct 4890 from 5000 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 11:
978 can be fit into 1100 1 times, resulting in a remainder of 122.
Record the quotient 1 as the next digit in the result. 
Result so far: 66815.051
Deduct 978 from 1100 and we're left with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 12:
1220 divided by 978 is 1 with a remainder of 242.
Write down 1 as next digit of the result. 
Result so far: 66815.0511
Subtracting 978 from 1220 leaves us with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Our division results in 66815.0511 with a remaining 0.00242.