We look at the division of 91258152 by 885 
The aim is to understand the frequency of 885 in 91258152.

On to step 1:
885 can be fit into 9 0 times, resulting in a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 885

Advancing to step 2:
When dividing 91 by 885, we get 0 with a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Grab the next digit (2) from the dividend, add it to 91, then carry on: 912 / 885

Moving on to step 3:
885 goes into 912 1 times with a remainder of 27.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 885 from 912 to get 27.
Take the next digit (5) from the dividend and append it to 27, then repeat: 275 / 885

On to step 4:
The number 885 fits into 275 0 times, leaving a remainder of 275.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 275 after subtracting 0 from 275.
Bring next digit (8) of the dividend behind the 275 and repeat the process: 2758 / 885

Advancing to step 5:
When dividing 2758 by 885, we get 3 with a remainder of 103.
The next digit of our result is 3. 
Result so far: 103.0
Subtract 2655 from 2758 to get 103.
Grab the next digit (1) from the dividend, add it to 103, then carry on: 1031 / 885

Advancing to step 6:
885 can be fit into 1031 1 times, resulting in a remainder of 146.
Record the quotient 1 as the next digit in the result. 
Result so far: 1031.0
If we subtract 885 from 1031, we get 146.
Grab the next digit (5) from the dividend, add it to 146, then carry on: 1465 / 885

Going ahead to step 7:
885 goes into 1465 1 times with a remainder of 580.
Record the quotient 1 as the next digit in the result. 
Result so far: 10311.0
Subtract 885 from 1465 to get 580.
Take the next digit (2) from the dividend and append it to 580, then repeat: 5802 / 885

Step 8:
5802 divided by 885 is 6 with a remainder of 492.
Use 6 as the next digit of our solution. 
Result so far: 103116.0
Deduct 5310 from 5802 and we're left with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Moving on to step 9:
885 can be fit into 4920 5 times, resulting in a remainder of 495.
Record the quotient 5 as the next digit in the result. 
Result so far: 103116.5
If we take 4425 away from 4920, we end up with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Going ahead to step 10:
When dividing 4950 by 885, we get 5 with a remainder of 525.
The next digit of our result is 5. 
Result so far: 103116.55
If we subtract 4425 from 4950, we get 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

After the division, we end up with 103116.55 and a remainder of 0.525.