78586205 divided by 531 
The aim is to understand the frequency of 531 in 78586205.

On to step 1:
7 divided by 531 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 531

Moving on to step 2:
78 divided by 531 is 0 with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Include the next digit (5) from the dividend after 78, then repeat: 785 / 531

Going ahead to step 3:
If we divide 785 by 531, we get 1 and a remainder of 254.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 531 from 785 and we're left with 254.
Bring next digit (8) of the dividend behind the 254 and repeat the process: 2548 / 531

On to step 4:
The number 531 fits into 2548 4 times, leaving a remainder of 424.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 2124 from 2548 to get 424.
Append the next digit (6) from the dividend to 424 and continue with: 4246 / 531

Step 5:
4246 divided by 531 is 7 with a remainder of 529.
Write down 7 as next digit of the result. 
Result so far: 147.0
Subtracting 3717 from 4246 leaves us with 529.
Take the next digit (2) from the dividend and append it to 529, then repeat: 5292 / 531

Step 6:
5292 divided by 531 is 9 with a remainder of 513.
Use 9 as the next digit of our solution. 
Result so far: 1479.0
Subtract 4779 from 5292 to get 513.
Include the next digit (0) from the dividend after 513, then repeat: 5130 / 531

On to step 7:
If we divide 5130 by 531, we get 9 and a remainder of 351.
Put 9 as the next digit of the answer. 
Result so far: 14799.0
The remainder is 351 after subtracting 4779 from 5130.
Include the next digit (5) from the dividend after 351, then repeat: 3515 / 531

Advancing to step 8:
3515 divided by 531 is 6 with a remainder of 329.
Use 6 as the next digit of our solution. 
Result so far: 147996.0
Subtract 3186 from 3515 to get 329.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3290, and continue the process.

On to step 9:
531 can be fit into 3290 6 times, resulting in a remainder of 104.
Record the quotient 6 as the next digit in the result. 
Result so far: 147996.6
Deduct 3186 from 3290 and we're left with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 10:
1040 divided by 531 is 1 with a remainder of 509.
Write down 1 as next digit of the result. 
Result so far: 147996.61
If we take 531 away from 1040, we end up with 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Going ahead to step 11:
531 goes into 5090 9 times with a remainder of 311.
Put 9 as the next digit of the answer. 
Result so far: 147996.619
If we take 4779 away from 5090, we end up with 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Step 12:
When dividing 3110 by 531, we get 5 with a remainder of 455.
Use 5 as the next digit of our solution. 
Result so far: 147996.6195
If we take 2655 away from 3110, we end up with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Going ahead to step 13:
If we divide 4550 by 531, we get 8 and a remainder of 302.
The next digit of our result is 8. 
Result so far: 147996.61958
Subtract 4248 from 4550 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Going ahead to step 14:
The number 531 fits into 3020 5 times, leaving a remainder of 365.
Write down 5 as next digit of the result. 
Result so far: 147996.619585
If we take 2655 away from 3020, we end up with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Moving on to step 15:
3650 divided by 531 is 6 with a remainder of 464.
Write down 6 as next digit of the result. 
Result so far: 147996.6195856
If we subtract 3186 from 3650, we get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Moving on to step 16:
4640 divided by 531 is 8 with a remainder of 392.
Use 8 as the next digit of our solution. 
Result so far: 147996.61958568
If we take 4248 away from 4640, we end up with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

In conclusion, the division gives 147996.61958568 with a balance of 3.92e-07.