We look at the division of 90001776 by 557 
The aim is to understand the frequency of 557 in 90001776.

Let's proceed to step 1:
If we divide 9 by 557, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 557

Step 2:
90 divided by 557 is 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Bring next digit (0) of the dividend behind the 90 and repeat the process: 900 / 557

On to step 3:
When dividing 900 by 557, we get 1 with a remainder of 343.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 557 from 900 to get 343.
Bring next digit (0) of the dividend behind the 343 and repeat the process: 3430 / 557

On to step 4:
When dividing 3430 by 557, we get 6 with a remainder of 88.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtracting 3342 from 3430 leaves us with 88.
Bring next digit (1) of the dividend behind the 88 and repeat the process: 881 / 557

Moving on to step 5:
The number 557 fits into 881 1 times, leaving a remainder of 324.
Write down 1 as next digit of the result. 
Result so far: 161.0
The remainder is 324 after subtracting 557 from 881.
Bring next digit (7) of the dividend behind the 324 and repeat the process: 3247 / 557

Moving on to step 6:
557 goes into 3247 5 times with a remainder of 462.
Record the quotient 5 as the next digit in the result. 
Result so far: 1615.0
If we subtract 2785 from 3247, we get 462.
Append the next digit (7) from the dividend to 462 and continue with: 4627 / 557

Advancing to step 7:
557 can be fit into 4627 8 times, resulting in a remainder of 171.
Put 8 as the next digit of the answer. 
Result so far: 16158.0
The remainder is 171 after subtracting 4456 from 4627.
Include the next digit (6) from the dividend after 171, then repeat: 1716 / 557

On to step 8:
557 goes into 1716 3 times with a remainder of 45.
Write down 3 as next digit of the result. 
Result so far: 161583.0
If we subtract 1671 from 1716, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 9:
557 goes into 450 0 times with a remainder of 450.
The next digit of our result is 0. 
Result so far: 161583.0
The remainder is 450 after subtracting 0 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

On to step 10:
557 goes into 4500 8 times with a remainder of 44.
Write down 8 as next digit of the result. 
Result so far: 161583.08
Subtracting 4456 from 4500 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 11:
557 can be fit into 440 0 times, resulting in a remainder of 440.
The number 0 becomes the next digit in our result. 
Result so far: 161583.08
The remainder is 440 after subtracting 0 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Advancing to step 12:
557 can be fit into 4400 7 times, resulting in a remainder of 501.
The next digit of our result is 7. 
Result so far: 161583.0807
If we subtract 3899 from 4400, we get 501.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

On to step 13:
If we divide 5010 by 557, we get 8 and a remainder of 554.
Put 8 as the next digit of the answer. 
Result so far: 161583.08078
If we take 4456 away from 5010, we end up with 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Advancing to step 14:
The number 557 fits into 5540 9 times, leaving a remainder of 527.
Write down 9 as next digit of the result. 
Result so far: 161583.080789
If we subtract 5013 from 5540, we get 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Going ahead to step 15:
If we divide 5270 by 557, we get 9 and a remainder of 257.
Put 9 as the next digit of the answer. 
Result so far: 161583.0807899
Deduct 5013 from 5270 and we're left with 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

The quotient of the division is 161583.0807899, and the remainder is 2.57e-06.