61503571 ÷ 579 
The aim is to understand the frequency of 579 in 61503571.

Moving on to step 1:
6 divided by 579 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 579

Let's proceed to step 2:
579 can be fit into 61 0 times, resulting in a remainder of 61.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 61 after subtracting 0 from 61.
Grab the next digit (5) from the dividend, add it to 61, then carry on: 615 / 579

Step 3:
The number 579 fits into 615 1 times, leaving a remainder of 36.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 579 from 615 to get 36.
Include the next digit (0) from the dividend after 36, then repeat: 360 / 579

Step 4:
When dividing 360 by 579, we get 0 with a remainder of 360.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 360 to get 360.
Append the next digit (3) from the dividend to 360 and continue with: 3603 / 579

Moving on to step 5:
When dividing 3603 by 579, we get 6 with a remainder of 129.
Use 6 as the next digit of our solution. 
Result so far: 106.0
If we subtract 3474 from 3603, we get 129.
Fetch the next digit (5) from the dividend, attach it to 129 and continue: 1295 / 579

Step 6:
When dividing 1295 by 579, we get 2 with a remainder of 137.
The next digit of our result is 2. 
Result so far: 1062.0
The remainder is 137 after subtracting 1158 from 1295.
Fetch the next digit (7) from the dividend, attach it to 137 and continue: 1377 / 579

Moving on to step 7:
579 goes into 1377 2 times with a remainder of 219.
Use 2 as the next digit of our solution. 
Result so far: 10622.0
The remainder is 219 after subtracting 1158 from 1377.
Fetch the next digit (1) from the dividend, attach it to 219 and continue: 2191 / 579

Moving on to step 8:
579 goes into 2191 3 times with a remainder of 454.
Write down 3 as next digit of the result. 
Result so far: 106223.0
Subtracting 1737 from 2191 leaves us with 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Going ahead to step 9:
579 can be fit into 4540 7 times, resulting in a remainder of 487.
Put 7 as the next digit of the answer. 
Result so far: 106223.7
If we take 4053 away from 4540, we end up with 487.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4870, and continue the process.

Step 10:
If we divide 4870 by 579, we get 8 and a remainder of 238.
Use 8 as the next digit of our solution. 
Result so far: 106223.78
Deduct 4632 from 4870 and we're left with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Going ahead to step 11:
When dividing 2380 by 579, we get 4 with a remainder of 64.
The next digit of our result is 4. 
Result so far: 106223.784
If we subtract 2316 from 2380, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 12:
579 can be fit into 640 1 times, resulting in a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 106223.7841
The remainder is 61 after subtracting 579 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 13:
The number 579 fits into 610 1 times, leaving a remainder of 31.
The next digit of our result is 1. 
Result so far: 106223.78411
If we subtract 579 from 610, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

The final outcome is 106223.78411, with a leftover of 3.1e-05.