9646440 ÷ 555 
The aim is to understand the frequency of 555 in 9646440.

Step 1:
555 goes into 9 0 times with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 555

Moving on to step 2:
If we divide 96 by 555, we get 0 and a remainder of 96.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 96 to get 96.
Bring next digit (4) of the dividend behind the 96 and repeat the process: 964 / 555

Let's proceed to step 3:
The number 555 fits into 964 1 times, leaving a remainder of 409.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 555 from 964 and we're left with 409.
Append the next digit (6) from the dividend to 409 and continue with: 4096 / 555

Moving on to step 4:
The number 555 fits into 4096 7 times, leaving a remainder of 211.
Write down 7 as next digit of the result. 
Result so far: 17.0
The remainder is 211 after subtracting 3885 from 4096.
Grab the next digit (4) from the dividend, add it to 211, then carry on: 2114 / 555

Moving on to step 5:
When dividing 2114 by 555, we get 3 with a remainder of 449.
Write down 3 as next digit of the result. 
Result so far: 173.0
Subtract 1665 from 2114 to get 449.
Bring next digit (4) of the dividend behind the 449 and repeat the process: 4494 / 555

Let's proceed to step 6:
If we divide 4494 by 555, we get 8 and a remainder of 54.
Record the quotient 8 as the next digit in the result. 
Result so far: 1738.0
If we subtract 4440 from 4494, we get 54.
Bring next digit (0) of the dividend behind the 54 and repeat the process: 540 / 555

Advancing to step 7:
If we divide 540 by 555, we get 0 and a remainder of 540.
Record the quotient 0 as the next digit in the result. 
Result so far: 17380.0
Subtracting 0 from 540 leaves us with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Let's proceed to step 8:
When dividing 5400 by 555, we get 9 with a remainder of 405.
The next digit of our result is 9. 
Result so far: 17380.9
If we subtract 4995 from 5400, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Advancing to step 9:
When dividing 4050 by 555, we get 7 with a remainder of 165.
Record the quotient 7 as the next digit in the result. 
Result so far: 17380.97
Subtracting 3885 from 4050 leaves us with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Step 10:
When dividing 1650 by 555, we get 2 with a remainder of 540.
The next digit of our result is 2. 
Result so far: 17380.972
Subtracting 1110 from 1650 leaves us with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

On to step 11:
The number 555 fits into 5400 9 times, leaving a remainder of 405.
Use 9 as the next digit of our solution. 
Result so far: 17380.9729
The remainder is 405 after subtracting 4995 from 5400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Let's proceed to step 12:
The number 555 fits into 4050 7 times, leaving a remainder of 165.
Write down 7 as next digit of the result. 
Result so far: 17380.97297
Subtract 3885 from 4050 to get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Let's proceed to step 13:
555 goes into 1650 2 times with a remainder of 540.
Put 2 as the next digit of the answer. 
Result so far: 17380.972972
Subtract 1110 from 1650 to get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Moving on to step 14:
The number 555 fits into 5400 9 times, leaving a remainder of 405.
Put 9 as the next digit of the answer. 
Result so far: 17380.9729729
If we subtract 4995 from 5400, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Advancing to step 15:
4050 divided by 555 is 7 with a remainder of 165.
The number 7 becomes the next digit in our result. 
Result so far: 17380.97297297
If we subtract 3885 from 4050, we get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

After the division, we end up with 17380.97297297 and a remainder of 1.65e-07.