20538173 ÷ 888 
The aim is to understand the frequency of 888 in 20538173.

Advancing to step 1:
If we divide 2 by 888, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 888

On to step 2:
The number 888 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 888

Let's proceed to step 3:
888 can be fit into 205 0 times, resulting in a remainder of 205.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 205 leaves us with 205.
Fetch the next digit (3) from the dividend, attach it to 205 and continue: 2053 / 888

Advancing to step 4:
The number 888 fits into 2053 2 times, leaving a remainder of 277.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 1776 from 2053, we get 277.
Fetch the next digit (8) from the dividend, attach it to 277 and continue: 2778 / 888

Step 5:
When dividing 2778 by 888, we get 3 with a remainder of 114.
Write down 3 as next digit of the result. 
Result so far: 23.0
The remainder is 114 after subtracting 2664 from 2778.
Append the next digit (1) from the dividend to 114 and continue with: 1141 / 888

Advancing to step 6:
888 goes into 1141 1 times with a remainder of 253.
Put 1 as the next digit of the answer. 
Result so far: 231.0
Subtracting 888 from 1141 leaves us with 253.
Fetch the next digit (7) from the dividend, attach it to 253 and continue: 2537 / 888

Moving on to step 7:
If we divide 2537 by 888, we get 2 and a remainder of 761.
The next digit of our result is 2. 
Result so far: 2312.0
The remainder is 761 after subtracting 1776 from 2537.
Append the next digit (3) from the dividend to 761 and continue with: 7613 / 888

Moving on to step 8:
When dividing 7613 by 888, we get 8 with a remainder of 509.
The next digit of our result is 8. 
Result so far: 23128.0
Deduct 7104 from 7613 and we're left 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.

On to step 9:
The number 888 fits into 5090 5 times, leaving a remainder of 650.
The number 5 becomes the next digit in our result. 
Result so far: 23128.5
If we subtract 4440 from 5090, we get 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Going ahead to step 10:
888 goes into 6500 7 times with a remainder of 284.
The next digit of our result is 7. 
Result so far: 23128.57
The remainder is 284 after subtracting 6216 from 6500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Advancing to step 11:
888 can be fit into 2840 3 times, resulting in a remainder of 176.
Record the quotient 3 as the next digit in the result. 
Result so far: 23128.573
Subtract 2664 from 2840 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Step 12:
888 can be fit into 1760 1 times, resulting in a remainder of 872.
Write down 1 as next digit of the result. 
Result so far: 23128.5731
If we subtract 888 from 1760, we get 872.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8720, and continue the process.

On to step 13:
The number 888 fits into 8720 9 times, leaving a remainder of 728.
Put 9 as the next digit of the answer. 
Result so far: 23128.57319
If we subtract 7992 from 8720, we get 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Step 14:
888 goes into 7280 8 times with a remainder of 176.
The next digit of our result is 8. 
Result so far: 23128.573198
If we take 7104 away from 7280, we end up with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 15:
The number 888 fits into 1760 1 times, leaving a remainder of 872.
Put 1 as the next digit of the answer. 
Result so far: 23128.5731981
The remainder is 872 after subtracting 888 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8720, and continue the process.

Let's proceed to step 16:
When dividing 8720 by 888, we get 9 with a remainder of 728.
The number 9 becomes the next digit in our result. 
Result so far: 23128.57319819
Subtract 7992 from 8720 to get 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

After the division, we end up with 23128.57319819 and a remainder of 7.28e-07.