9646421 ÷ 530 
The aim is to understand the frequency of 530 in 9646421.

On to step 1:
530 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 530

Step 2:
96 divided by 530 is 0 with 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.
Grab the next digit (4) from the dividend, add it to 96, then carry on: 964 / 530

On to step 3:
530 can be fit into 964 1 times, resulting in a remainder of 434.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 530 from 964 leaves us with 434.
Take the next digit (6) from the dividend and append it to 434, then repeat: 4346 / 530

Going ahead to step 4:
The number 530 fits into 4346 8 times, leaving a remainder of 106.
The next digit of our result is 8. 
Result so far: 18.0
Deduct 4240 from 4346 and we're left with 106.
Fetch the next digit (4) from the dividend, attach it to 106 and continue: 1064 / 530

Step 5:
530 can be fit into 1064 2 times, resulting in a remainder of 4.
The next digit of our result is 2. 
Result so far: 182.0
Subtracting 1060 from 1064 leaves us with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 530

Going ahead to step 6:
530 goes into 42 0 times with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 1820.0
If we take 0 away from 42, we end up with 42.
Append the next digit (1) from the dividend to 42 and continue with: 421 / 530

On to step 7:
The number 530 fits into 421 0 times, leaving a remainder of 421.
Record the quotient 0 as the next digit in the result. 
Result so far: 18200.0
The remainder is 421 after subtracting 0 from 421.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4210, and continue the process.

Advancing to step 8:
4210 divided by 530 is 7 with a remainder of 500.
Write down 7 as next digit of the result. 
Result so far: 18200.7
If we take 3710 away from 4210, we end up with 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 9:
If we divide 5000 by 530, we get 9 and a remainder of 230.
Put 9 as the next digit of the answer. 
Result so far: 18200.79
Subtract 4770 from 5000 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 10:
If we divide 2300 by 530, we get 4 and a remainder of 180.
Use 4 as the next digit of our solution. 
Result so far: 18200.794
Subtract 2120 from 2300 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 11:
530 can be fit into 1800 3 times, resulting in a remainder of 210.
The number 3 becomes the next digit in our result. 
Result so far: 18200.7943
Deduct 1590 from 1800 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 12:
If we divide 2100 by 530, we get 3 and a remainder of 510.
Use 3 as the next digit of our solution. 
Result so far: 18200.79433
The remainder is 510 after subtracting 1590 from 2100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

After the division, we end up with 18200.79433 and a remainder of 0.00051.