We're dividing 78517529 by 535 
The aim is to understand the frequency of 535 in 78517529.

Going ahead to step 1:
When dividing 7 by 535, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 535

Advancing to step 2:
When dividing 78 by 535, we get 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Include the next digit (5) from the dividend after 78, then repeat: 785 / 535

Step 3:
535 goes into 785 1 times with a remainder of 250.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 535 from 785, we get 250.
Bring next digit (1) of the dividend behind the 250 and repeat the process: 2501 / 535

Going ahead to step 4:
535 can be fit into 2501 4 times, resulting in a remainder of 361.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we take 2140 away from 2501, we end up with 361.
Take the next digit (7) from the dividend and append it to 361, then repeat: 3617 / 535

Going ahead to step 5:
If we divide 3617 by 535, we get 6 and a remainder of 407.
The number 6 becomes the next digit in our result. 
Result so far: 146.0
If we subtract 3210 from 3617, we get 407.
Grab the next digit (5) from the dividend, add it to 407, then carry on: 4075 / 535

Let's proceed to step 6:
When dividing 4075 by 535, we get 7 with a remainder of 330.
Put 7 as the next digit of the answer. 
Result so far: 1467.0
Subtracting 3745 from 4075 leaves us with 330.
Take the next digit (2) from the dividend and append it to 330, then repeat: 3302 / 535

Going ahead to step 7:
535 can be fit into 3302 6 times, resulting in a remainder of 92.
The number 6 becomes the next digit in our result. 
Result so far: 14676.0
If we take 3210 away from 3302, we end up with 92.
Grab the next digit (9) from the dividend, add it to 92, then carry on: 929 / 535

Step 8:
If we divide 929 by 535, we get 1 and a remainder of 394.
Put 1 as the next digit of the answer. 
Result so far: 146761.0
Subtracting 535 from 929 leaves us with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Going ahead to step 9:
535 can be fit into 3940 7 times, resulting in a remainder of 195.
Put 7 as the next digit of the answer. 
Result so far: 146761.7
If we take 3745 away from 3940, we end up with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

On to step 10:
1950 divided by 535 is 3 with a remainder of 345.
Use 3 as the next digit of our solution. 
Result so far: 146761.73
The remainder is 345 after subtracting 1605 from 1950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

Advancing to step 11:
The number 535 fits into 3450 6 times, leaving a remainder of 240.
Write down 6 as next digit of the result. 
Result so far: 146761.736
The remainder is 240 after subtracting 3210 from 3450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 12:
535 goes into 2400 4 times with a remainder of 260.
The next digit of our result is 4. 
Result so far: 146761.7364
Subtracting 2140 from 2400 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 13:
2600 divided by 535 is 4 with a remainder of 460.
The number 4 becomes the next digit in our result. 
Result so far: 146761.73644
Deduct 2140 from 2600 and we're left with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

After the division, we end up with 146761.73644 and a remainder of 0.00046.