Let's divide 89708990 by 538
The aim is to understand the frequency of 538 in 89708990.

On to step 1:
The number 538 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 538

On to step 2:
When dividing 89 by 538, we get 0 with a remainder of 89.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 89, we end up with 89.
Grab the next digit (7) from the dividend, add it to 89, then carry on: 897 / 538

Moving on to step 3:
538 can be fit into 897 1 times, resulting in a remainder of 359.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 538 from 897 to get 359.
Bring next digit (0) of the dividend behind the 359 and repeat the process: 3590 / 538

Going ahead to step 4:
538 can be fit into 3590 6 times, resulting in a remainder of 362.
The next digit of our result is 6. 
Result so far: 16.0
The remainder is 362 after subtracting 3228 from 3590.
Append the next digit (8) from the dividend to 362 and continue with: 3628 / 538

Advancing to step 5:
When dividing 3628 by 538, we get 6 with a remainder of 400.
Use 6 as the next digit of our solution. 
Result so far: 166.0
Deduct 3228 from 3628 and we're left with 400.
Append the next digit (9) from the dividend to 400 and continue with: 4009 / 538

Step 6:
If we divide 4009 by 538, we get 7 and a remainder of 243.
The next digit of our result is 7. 
Result so far: 1667.0
Deduct 3766 from 4009 and we're left with 243.
Append the next digit (9) from the dividend to 243 and continue with: 2439 / 538

Let's proceed to step 7:
2439 divided by 538 is 4 with a remainder of 287.
Put 4 as the next digit of the answer. 
Result so far: 16674.0
The remainder is 287 after subtracting 2152 from 2439.
Include the next digit (0) from the dividend after 287, then repeat: 2870 / 538

Moving on to step 8:
538 can be fit into 2870 5 times, resulting in a remainder of 180.
Put 5 as the next digit of the answer. 
Result so far: 166745.0
If we subtract 2690 from 2870, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 9:
The number 538 fits into 1800 3 times, leaving a remainder of 186.
Write down 3 as next digit of the result. 
Result so far: 166745.3
Deduct 1614 from 1800 and we're left with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Let's proceed to step 10:
1860 divided by 538 is 3 with a remainder of 246.
Record the quotient 3 as the next digit in the result. 
Result so far: 166745.33
Deduct 1614 from 1860 and we're left with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

The quotient of the division is 166745.33, and the remainder is 0.246.