3507687 ÷ 978 
The aim is to understand the frequency of 978 in 3507687.

Advancing to step 1:
If we divide 3 by 978, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 978

On to step 2:
35 divided by 978 is 0 with a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 35, we get 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 978

Step 3:
The number 978 fits into 350 0 times, leaving a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 350 and we're left with 350.
Bring next digit (7) of the dividend behind the 350 and repeat the process: 3507 / 978

Step 4:
978 goes into 3507 3 times with a remainder of 573.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 2934 from 3507 and we're left with 573.
Take the next digit (6) from the dividend and append it to 573, then repeat: 5736 / 978

Going ahead to step 5:
The number 978 fits into 5736 5 times, leaving a remainder of 846.
Put 5 as the next digit of the answer. 
Result so far: 35.0
Subtract 4890 from 5736 to get 846.
Fetch the next digit (8) from the dividend, attach it to 846 and continue: 8468 / 978

Step 6:
978 can be fit into 8468 8 times, resulting in a remainder of 644.
Use 8 as the next digit of our solution. 
Result so far: 358.0
The remainder is 644 after subtracting 7824 from 8468.
Fetch the next digit (7) from the dividend, attach it to 644 and continue: 6447 / 978

Let's proceed to step 7:
If we divide 6447 by 978, we get 6 and a remainder of 579.
Record the quotient 6 as the next digit in the result. 
Result so far: 3586.0
The remainder is 579 after subtracting 5868 from 6447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5790, and continue the process.

Let's proceed to step 8:
The number 978 fits into 5790 5 times, leaving a remainder of 900.
The number 5 becomes the next digit in our result. 
Result so far: 3586.5
Subtract 4890 from 5790 to get 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9000, and continue the process.

Going ahead to step 9:
978 can be fit into 9000 9 times, resulting in a remainder of 198.
Record the quotient 9 as the next digit in the result. 
Result so far: 3586.59
Subtracting 8802 from 9000 leaves us with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Going ahead to step 10:
978 can be fit into 1980 2 times, resulting in a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 3586.592
The remainder is 24 after subtracting 1956 from 1980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
240 divided by 978 is 0 with a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 3586.592
Deduct 0 from 240 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 12:
When dividing 2400 by 978, we get 2 with a remainder of 444.
Use 2 as the next digit of our solution. 
Result so far: 3586.59202
If we take 1956 away from 2400, we end up with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Moving on to step 13:
When dividing 4440 by 978, we get 4 with a remainder of 528.
Write down 4 as next digit of the result. 
Result so far: 3586.592024
Deduct 3912 from 4440 and we're left with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

On to step 14:
5280 divided by 978 is 5 with a remainder of 390.
Write down 5 as next digit of the result. 
Result so far: 3586.5920245
If we take 4890 away from 5280, we end up with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Advancing to step 15:
978 can be fit into 3900 3 times, resulting in a remainder of 966.
The number 3 becomes the next digit in our result. 
Result so far: 3586.59202453
If we take 2934 away from 3900, we end up with 966.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9660, and continue the process.

The final result is 3586.59202453 with a remainder of 9.66e-07.