6583210 divided by 852 
The aim is to understand the frequency of 852 in 6583210.

On to step 1:
When dividing 6 by 852, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 852

On to step 2:
The number 852 fits into 65 0 times, leaving a remainder of 65.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 65 and we're left with 65.
Grab the next digit (8) from the dividend, add it to 65, then carry on: 658 / 852

Advancing to step 3:
852 goes into 658 0 times with a remainder of 658.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 658, we end up with 658.
Grab the next digit (3) from the dividend, add it to 658, then carry on: 6583 / 852

Moving on to step 4:
852 can be fit into 6583 7 times, resulting in a remainder of 619.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we take 5964 away from 6583, we end up with 619.
Fetch the next digit (2) from the dividend, attach it to 619 and continue: 6192 / 852

Step 5:
852 goes into 6192 7 times with a remainder of 228.
Put 7 as the next digit of the answer. 
Result so far: 77.0
Deduct 5964 from 6192 and we're left with 228.
Grab the next digit (1) from the dividend, add it to 228, then carry on: 2281 / 852

Going ahead to step 6:
The number 852 fits into 2281 2 times, leaving a remainder of 577.
Record the quotient 2 as the next digit in the result. 
Result so far: 772.0
Subtract 1704 from 2281 to get 577.
Take the next digit (0) from the dividend and append it to 577, then repeat: 5770 / 852

Going ahead to step 7:
852 can be fit into 5770 6 times, resulting in a remainder of 658.
Use 6 as the next digit of our solution. 
Result so far: 7726.0
Deduct 5112 from 5770 and we're left with 658.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6580, and continue the process.

On to step 8:
If we divide 6580 by 852, we get 7 and a remainder of 616.
The next digit of our result is 7. 
Result so far: 7726.7
If we take 5964 away from 6580, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Advancing to step 9:
852 goes into 6160 7 times with a remainder of 196.
Put 7 as the next digit of the answer. 
Result so far: 7726.77
If we subtract 5964 from 6160, we get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

After the division, we end up with 7726.77 and a remainder of 0.196.