We're dividing 76543060 by 558 
The aim is to understand the frequency of 558 in 76543060.

Let's proceed to step 1:
If we divide 7 by 558, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 558

Moving on to step 2:
If we divide 76 by 558, we get 0 and a remainder of 76.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 76 and we're left with 76.
Take the next digit (5) from the dividend and append it to 76, then repeat: 765 / 558

Going ahead to step 3:
When dividing 765 by 558, we get 1 with a remainder of 207.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 558 from 765 leaves us with 207.
Append the next digit (4) from the dividend to 207 and continue with: 2074 / 558

Going ahead to step 4:
The number 558 fits into 2074 3 times, leaving a remainder of 400.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 1674 from 2074 and we're left with 400.
Include the next digit (3) from the dividend after 400, then repeat: 4003 / 558

Let's proceed to step 5:
The number 558 fits into 4003 7 times, leaving a remainder of 97.
Write down 7 as next digit of the result. 
Result so far: 137.0
If we subtract 3906 from 4003, we get 97.
Append the next digit (0) from the dividend to 97 and continue with: 970 / 558

Going ahead to step 6:
970 divided by 558 is 1 with a remainder of 412.
Put 1 as the next digit of the answer. 
Result so far: 1371.0
Deduct 558 from 970 and we're left with 412.
Fetch the next digit (6) from the dividend, attach it to 412 and continue: 4126 / 558

On to step 7:
The number 558 fits into 4126 7 times, leaving a remainder of 220.
The number 7 becomes the next digit in our result. 
Result so far: 13717.0
Subtracting 3906 from 4126 leaves us with 220.
Bring next digit (0) of the dividend behind the 220 and repeat the process: 2200 / 558

On to step 8:
If we divide 2200 by 558, we get 3 and a remainder of 526.
Use 3 as the next digit of our solution. 
Result so far: 137173.0
Subtract 1674 from 2200 to get 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

Moving on to step 9:
The number 558 fits into 5260 9 times, leaving a remainder of 238.
Use 9 as the next digit of our solution. 
Result so far: 137173.9
If we subtract 5022 from 5260, we get 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 10:
If we divide 2380 by 558, we get 4 and a remainder of 148.
Write down 4 as next digit of the result. 
Result so far: 137173.94
Deduct 2232 from 2380 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Moving on to step 11:
558 can be fit into 1480 2 times, resulting in a remainder of 364.
Write down 2 as next digit of the result. 
Result so far: 137173.942
Subtracting 1116 from 1480 leaves us with 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Step 12:
If we divide 3640 by 558, we get 6 and a remainder of 292.
The next digit of our result is 6. 
Result so far: 137173.9426
If we take 3348 away from 3640, we end up with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

On to step 13:
558 can be fit into 2920 5 times, resulting in a remainder of 130.
The number 5 becomes the next digit in our result. 
Result so far: 137173.94265
The remainder is 130 after subtracting 2790 from 2920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Step 14:
1300 divided by 558 is 2 with a remainder of 184.
Write down 2 as next digit of the result. 
Result so far: 137173.942652
If we take 1116 away from 1300, we end up with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

On to step 15:
1840 divided by 558 is 3 with a remainder of 166.
The number 3 becomes the next digit in our result. 
Result so far: 137173.9426523
The remainder is 166 after subtracting 1674 from 1840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Advancing to step 16:
The number 558 fits into 1660 2 times, leaving a remainder of 544.
The number 2 becomes the next digit in our result. 
Result so far: 137173.94265232
If we take 1116 away from 1660, we end up with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

The final outcome is 137173.94265232, with a leftover of 5.44e-07.